Which term describes the situation, for x‑linked genes, in human and drosophila males who have only one x chromosome?
a. heterozygous b. hemizygous homozygous c. homogametic d. dioecious
Answers
The term that describes the situation for X‑linked genes, in human and drosophila males who have only one X chromosome is hemizygous.
Thus, the correct option is B.
In humаns аnd other mаmmаls, biologicаl sex is determined by а pаir of sex chromosomes: XY in mаles аnd XX in femаles. Genes on the X chromosome аre sаid to be X-linked. X-linked genes hаve distinctive inheritаnce pаtterns becаuse they аre present in different numbers in femаles (XX) аnd mаles (XY).
Hemizygous describes аn individuаl who hаs only one member of а chromosome pаir or chromosome segment rаther thаn the usuаl two. Hemizygosity is often used to describe X-linked genes in mаles who hаve only one X chromosome. This term is sometimes used in somаtic cell genetics where cаncer cell lines аre often hemizygous for certаin аlleles or chromosomаl regions.
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Related Questions
How big would a 2 micrometer cell appear under each objective lens in the compound microscope?
Answers
The size of a 2-micrometer cell would appear differently under different objective lenses in a compound microscope.
The magnification of a compound microscope is determined by the combination of the objective lens and the eyepiece. Each objective lens has a specific magnification power, typically indicated on the lens. The total magnification is calculated by multiplying the magnification of the objective lens with that of the eyepiece. For example, if the objective lens has a magnification of 10x and the eyepiece has a magnification of 10x, the total magnification would be 100x (10x objective lens * 10x eyepiece). This means that the 2-micrometer cell would appear 100 times larger, making it appear as 200 micrometers .
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What method can scientists use to determine the absolute age of a rock?
Answers
Answer: Absolute Dating "hope this helps"
Explanation:
Over time, sedimentary layers of rock layer up over one another. How deep the rock is in the sedimentary layer can tell us how old it is.
A guess.
A patient with suspected internal bleeding is admitted to the hospital. His systemic blood pressure is 80/50 mm Hg: his MAP = 60 mmHg. (N = 120/80, MAP = 93.). You may use the graph below to develop your answer. a. Predict the patient's GFR given his current systemic blood pressure. Justify your answer.
Answers
Based on the graph provided, a systemic blood pressure of 80/50 mmHg and a MAP of 60 mmHg is indicative of severe hypotension. This level of hypotension could result in decreased renal perfusion and a subsequent decrease in the patient's glomerular filtration rate (GFR).
In fact, studies have shown that patients with hypotension, particularly those with sepsis or internal bleeding, are at a higher risk for acute kidney injury (AKI) and decreased GFR. This is because the kidneys require adequate blood pressure and perfusion to maintain their filtration function.
Therefore, it is likely that the patient's GFR is significantly decreased due to his low systemic blood pressure and internal bleeding. Exact numbers for the patient's GFR would need to be determined through laboratory testing, but it is clear that the patient is in a critical state and requires immediate medical intervention to address the internal bleeding and restore adequate blood pressure and renal perfusion
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Which arrow represents the change of state described
above?
The diagram shows changes of state between solid,
liquid, and gas. The atoms of a substance lose energy
during a change of state. After the change, the atoms are
close together but are able to slide past one another.
gas
L
ON
O
ОР
M
z o
Р
solid
liquid
Q
Answers
Answer: C. Letter O
Explanation:
The arrow in the diagram represents the changes of state between solid,
liquid, and gas. Thus, option A is correct.
What are the different states of matter?
Matter is defined as anything that occupies space and there are three states of matter solid, liquid, and gas. In solid the atoms are closely packed and there is no intermolecular space is found between two atoms. In liquid the atoms are placed at gap and the liquid has more inter molecular space as compare to solid and the last state it gas and it has large inter molecular space.
Solid are the type of material which are compact in shape and fix size or dimension. They are incompressible in nature. Liquid are the type of material which doesn't have fix shape and size . They are incompressible in nature. Gas are the type of material which doesn't have shape and size . They are generally compressible in nature.
Therefore, The arrow in the diagram represents the changes of state between solid, liquid, and gas. Thus, option A is correct.
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a mechanism for increasing the genetic diversity of offspring is
Answers
A mechanism for increasing the genetic diversity of offspring is sexual reproduction.
Sexual reproduction is the mechanism for increasing the genetic diversity of offspring. It involves the fusion of two gametes from two different individuals, one male and one female. Each gamete is haploid, meaning that it contains only one set of chromosomes. The fusion of these two haploid gametes during fertilization produces a diploid zygote that contains two sets of chromosomes, one from each parent. As a result, the offspring that arise from sexual reproduction inherit a combination of genetic traits from both parents, which leads to greater genetic diversity than offspring produced by asexual reproduction.This mechanism for increasing genetic diversity is important because it allows populations to adapt to changing environments and to evolve over time.
Sexual reproduction introduces new genetic combinations into the gene pool, which can increase the likelihood of producing individuals that are better suited to survive and reproduce in different environments. This genetic variation also provides a source of raw material for natural selection, allowing populations to evolve new traits in response to changes in the environment or other selective pressures. Therefore, sexual reproduction is considered a key mechanism for increasing genetic diversity, which is essential for the long-term survival of populations and species.
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Explain why xylem moves water in only one direction
Answers
Answer:
It can and does pass fluids in either direction. Functionally, flow in xylem is only in one direction primarily because roots are at one end of the tree and evaporation/transpiration is at the other. Water also gets unloaded throughout the tree by osmosis.
Explanation:
How are the nervous systems of a flatworm and a fish different?
One has a brain with a forebrain, a midbrain, and a hindbrain, and the other has ganglia in which integration can occur.
One has nerve cells with axons and the other does not.
One responds to stimuli in the environment and the other does not.
One is a loose network of connected neurons without centers of integration, and one has ganglia in which integration can occur.
brainliest to best answer
Answers
Answer:A flatworm has a simple nervous system with two nerve cords running down both of its sides. ... While a fish's nervous system is comprised of a central brain and a spinal cord along with many branching nerves, which allows them to sense things around them
Explanation:
A flatworm has a very mild nervous system with pair nerve cords moving down each side. It has two single brains called ganglia, which are pure packages of nerves. ... Fish have extremely advanced nervous systems organized around a brain.
brainliest?
hello. helpp! i AM new. who studies science. help
Answers
Answer:
with what do you need help with?
Explanation:
1. List the producers in this food web.
2.List the primary consumers in this food web.
3. List three secondary consumers.
4. List three tertiary consumers.
5. List two quaternary consumers.
Answers
2. The primary consumers are the giraffe, rhino, bug, mouse, and deer.
3. Three secondary consumers are the bird, fox, and monkey.
4. Three tertiary consumers the skunk and whatever that thing is between the monkey and fox (the image is blurry).
5. Two quaternary consumers are the vulture and the monkey.
What is the change in internal energy in joules for a system that releases 154j of heat and does 125j of work on its surroundings?.
Answers
The internal energy in joules for a system that releases 154j of heat and does 125j of work on its surroundings answer is -279J.
How the system's internal energy changes?
The first law of thermodynamics explains how the system's internal energy changes:
△U = Q-W
Where,
Q is the heat added to the system
W is the work done by the system The heat is expelled by the system (not absorbed) in this case, so Q = -154J, and the work is done by the system (not absorbed), so W = +152J, with a positive sign. As a result, the system's internal energy fluctuation is
U = Q-W = (-154J) - (+125J) = -279J.
As a result, the system's internal energy has decreased.
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Can someone please help me with this
Answers
DNA replication process is the event during which the molecule duplicates. It occurs in the interphase and involved different enzymes, a DNA molecule, and free nucleotides. Image attached.
Whatis DNA replication?DNA replication is the process through which DNI molecule duplicates. This event takes place during the S stage of the interphase. So when the cell divides during mitosis or meiosis, each cell will get a complete set of chromosomes.
DNI replication is semi-conservative because each new molecule carries an original DNI strand and a new one. The fact that the new molecule is composed of an original strand makes it semi-conservative. The old existing strands are used to synthesize the new complementary strand.
The origin of the replication requires helicase enzymes to break hydrogen bonds and separate the two original strands. The topoisomerase enzyme is necessary to release tension. Other proteins are also needed to join the strains and keep them separated.
Once the molecule is opened, there is a region named replication forks. DNA polymerase makes the new nucleotides enter into the fork and pairs them with the corresponding nucleotide of the original strand. Adenine pairs timine, and cytosine pairs guanine.
DNA strands are antiparallel, and replication occurs only in 5'-3' direction. So one of the strands will replicate continuously, while the other strain will be formed by short fragments known as Okazaki fragments.
Primers are needed to make the DNA polymerase work. Primers are small units of RNA and are placed at the beginning of each new fragment.
You will find the labelled Image in the attached files.
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12. What are the reactants of reaction A?
13. What are the products of reaction A?
Answers
The reactants of reaction A are monosaccharides and the products are disaccharides.
What is a dehydration reaction?
The most typical example of a dehydration synthesis process is the dehydration of carbohydrates, often known as the sugar dehydration reaction. This is because carbohydrates are mostly created by combining monomers to create disaccharides or polysaccharides.
Examples of the dehydration synthesis of carbohydrates include:
Maltose sugar is created by the dehydration synthesis of two glucose (C6H12O66) sugars (C12H22O11)By interacting with one another through dehydration synthesis, glucose and lactose sugars can be combined to create lactose.In order to create sucrose, glucose and fructose interact through dehydration synthesis.
Therefore, the reactants of reaction A are monosaccharides and the products are disaccharides.
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which of the following is true about protein as an energy source? multiple choice protein and amino acid supplements are needed as energy sources for weight lifters. protein is more important than carbohydrate as an energy source for muscular activity. protein is a good energy source, supplying 7 kcal per gram. the use of protein as an energy source is greater for endurance athletes than for those who body build or lift weights.
Answers
The statement which is true regarding protein as a source of energy is: the use of protein as a source of energy is greater for endurance athletes than for those who do body-building or weightlifting.
Protein is an essential macro-nutrient which should be available in a person's diet. Proteins are important for the maintenance of muscle mass and they also enhance muscle growth. Proteins supply four calories per gram, just like carbohydrates. However, fats provide nine calories per gram.
The protein requirement is greater in endurance athletes as compared to those who do body-building or weightlifting since amino acid oxidation is considerably increased during endurance exercises.
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How
might a sinus infection affect the rest of the respiratory system?
Answers
Answer:
The inability of the sinuses to drain and the associated lack of airflow create an environment that is ideal for bacterial growth. In acute viral sinusitis, the virus that caused the upper respiratory infection has infected the sinuses and continues to produce mucus, inflammation, and congestion.
how does the new plant grow and develop
Answers
Which of the following statements is correct about the hierarchy of the taxonomic system currently used to classify organisms?
Question 19 options:
Many different classes of organisms belong to the same genus.
Many different kingdoms of organisms belong to the same phylum.
Many different orders of organisms belong to the same species.
Many different families of organisms belong to the same order.
Which kingdom includes an organism that can survive by photosynthesis in the presence of light or by consuming organic material in dark conditions?
Question 18 options:
Animalia
Protista
Plantae
Fungi
Examine the images here for two tree species. Which taxonomic grouping defines the commonality of these two trees?
Question 17 options:
These trees share the same genus but not the same species.
The trees share all of the taxa involved in classification.
These trees share the same genus but not the same phylum.
These trees share the same species but not the same genus.
Scientists often use a cladogram such as the one below to illustrate evolutionary relationships.
Which is the best explanation for separating reptiles from mammals?
Question 14 options:
the presence of an amniotic membrane in reptiles that is not found in mammals
the presence of hair in reptiles that is not found in mammals
the presence of an amniotic membrane in mammals that is not found in reptiles
the presence of hair in mammals that is not found in reptiles
Scientists often use a cladogram such as the one below to illustrate evolutionary relationships.
Which is the best explanation for separating reptiles from mammals?
Question 14 options:
the presence of an amniotic membrane in reptiles that is not found in mammals
the presence of hair in reptiles that is not found in mammals
the presence of an amniotic membrane in mammals that is not found in reptiles
the presence of hair in mammals that is not found in reptiles
A group of scientists discovered a new organism that is composed of many cells, gets its nutrition from decaying organisms, and has cell walls. To what kingdom would the new organism belong?
Question 12 options:
Plantae
Animalia
Fungi
Protista
The following cladogram shows the evolutionary relationships among five types of birds.
According to this cladogram, oystercatchers are more closely related to flamingos than to penguins.
Which of the following statements provides the best justification for this relationship?
Question 10 options:
The branch of the cladogram with oystercatchers is closer to the branch with flamingos than to the branch with penguins.
Both oystercatchers and flamingos are less closely related to the outgroup than penguins are.
Oystercatchers share a more recent common ancestor with flamingos than with penguins.
Oystercatchers share a common ancestor with flamingos but not with penguins.
Which statement best explains why a third domain, Archaea, was added to the original two domains of Bacteria and Eukarya?
Question 3 options:
Scientists discovered that some prokaryotes have cell walls.
Scientists discovered that eukaryotes have cell walls.
Scientists discovered that some prokaryotes live in extreme environments.
Scientists discovered that eukaryotes are unicellular.
Both plants and blue-green algae are photosynthetic but are classified as separate kingdoms. Which statement identifies a characteristic that distinguishes blue-green algae from plants?
Question 2 options:
Plants lack membrane-bound organelles and blue-green algae contain membrane-bound organelles.
Plants have specialized tissues and organs and blue-green algae do not.
Blue-green algae use their chlorophyll differently from plants.
Blue-green algae are better than plants at moving from place to place.
Answers
An organism that is composed of many cells, gets its nutrition from decaying organisms, and has cell walls belongs to kingdom fungi.
What is taxonomy?Taxonomy is the system of classifying all living things into appropriate groups. The incorrect statement about taxonomy is; "any different orders of organisms belong to the same species."
The kingdom that contains organisms that can survive by photosynthesis or by consuming organic material in dark conditions is fungi.
The difference between mammals and reptile is that the presence of hair in mammals that is not found in reptiles.
An organism that is composed of many cells, gets its nutrition from decaying organisms, and has cell walls belongs to kingdom fungi.
The reason why plants and blue-green algae are classified in different groups is because Blue-green algae use their chlorophyll differently from plants.
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Each month, a graafian follicle ruptures on the ovarian cortex, and an ovum releases into the pelvic cavity and into the fallopian tube. This process is known as ________.
Answers
Each month, a graafian follicle ruptures on the ovarian cortex, and an ovum releases into the pelvic cavity and into the fallopian tube. This process is known as Ovulation.
The process of an egg being released from the ovary is called ovulation. The egg is released and travels down the fallopian tube, where it remains for 12 to 24 hours before being fertilized. The egg may or may not be fertilized by sperm when it is released. If the egg is fertilized, it may move to the uterus where it will implant and grow into a pregnancy.
Follicle-stimulating hormone (FSH), which is released by your body during the follicular phase, aids in the maturation and preparation of the egg in your ovary for release.
When the egg is fully developed, your body produces a large amount of luteinizing hormone (LH), which causes the egg to be released. Around day 14, between 28 and 36 hours after the LH spike, ovulation typically takes place.
Luteinization occurs after ovulation. In the event of pregnancy, hormones will prevent the lining from shedding. If not, bleeding will begin on or around day 28 of the cycle, starting the following cycle.
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How does a cell wall compare to a cell membrane?
The cell wall determines which materials can move in and out of plant cells, and the cell membrane provides structural support for animal cells only.
The cell wall provides structural support for plant cells, and the cell membrane determines which materials can move in and out of both plant and animal cells.
The cell wall provides structural support for animal cells, and the cell membrane determines which materials can move in and out of plant cells only.
The cell wall determines which materials can move in and out of both plant and animal cells, while the cell membrane provides structural support for plant cells only.
Answers
Answer:
the 2 pne pretty sure its that
Which part of the cell membrane is labeled C?
A. protein channels
B. carbohydrate chain
C. lipid bilayer
D.phospholipid
Answers
The part of the cell membrane is labeled C is the lipid bilayer.
Therefore option C is correct.
What is the cell membrane?The cell membrane is described as a biological membrane that separates and protects the interior of all cells from the outside environment.
The most important biomolecules that form the cell membrane are said to be lipids like the phospholipids and cholesterol, proteins, and carbohydrates.
We can conclude according to the fluid mosaic model that proteins are essential components of the cell membrane that float in the lipid bilayer.
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thrombocytes are essential for coagulation of blood comment
Answers
Answer:
Thrombocytes. Thrombocytes (platelets) play an important role in hemostasis, by plugging and repairing damaged blood vessels, thus preventing blood loss. They also participate in a cascade of events that leads to blood clotting by triggering the release of a series of coagulation factors
Answer:
Blood is a connective tissue.it has many cellular components.Thromobocytes or platelets are one of theme.<br> Thrombocytes of platelets are found in blood .There number in the blood is 250000 /cubic mL of blood .They are formed in bone marrow and their life span is one week <br> When an injuiry is caused in the blood vessele,bleeding starts ,and the platelets are disingrated to release the clotting factor 3 called thromboplastin .This in presence of
Ca2+
ions activats prothrombokinase.A series of reaction ultimately occurs which causes blood to clot and plugg the injured blood vessel thus preventing further loss of blood
What are the new cells called and how do they compare with each other?
Answers
Answer:
The original cell is called the mother cell and the two new cells are called daughter cells.
Explanation:
The mitotic (M) phase and cytokinesis (C phase) together are called cell division, the division of the parent cell (original) into two daughter cells (new cells), each with the same genetic information (chromosomes) as the parent cell. Mitosis does NOT occur in prokaryotic cells that do NOT have a nucleus. (tesd. net)
The nucleus divides during mitosis, while the cytoplasm divides during cytokinesis. The two new cells are referred to as daughter cells.
What is daughter cells?Diploid cells are the daughter cells of mitosis. Diploid cells have two complete chromosome sets. Mitosis creates no genetic diversity in normal healthy cells because the daughter cells have exact copies of their parent cell's DNA. Either of the two cells formed when a cell divides through mitosis. Because they have the same number and type of chromosomes as the parent cell, daughter cells are genetically identical. Daughter cells are formed by the division of a single parent cell. They are produced by the mitotic and meiotic division processes. Cell division is the reproductive mechanism that allows living organisms to grow, develop, and reproduce.To learn more about daughter cells, refer to:
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2. An acorn is eaten by a squirrel and the squirrel is eaten by an owl. Show this feeding relationship
as a food chain. Label the producer, carnivore and the herbivore. (6 points)
Answers
Answer:
Producer: Acorn
Herbivore: Squirrel
Carnivore: Owl
Explanation:
Keep in mind not all squirrels are herbivores but these are the ones commonly found and this is the answer in accordance with the question.
Which of the following best describes differences between birds and reptiles?
O Birds are endothermic and have four-chambered hearts, while reptiles are ectothermic and have three-
Birds have feathers a brain and sensory organs, while reptiles have scales and a brain but lack senso
Birds are vertebrates and have specialized lungs, while reptiles are invertebrates and have gills and sca
Birds lay eggs and are ectothermic while reptiles undergo internal fertilization and are endothermic.
Answers
Answer:
(A) Birds are endothermic and have four-chambered hearts, while reptiles are ectothermic and have three-chambered hearts.
Explanation:
got it right on the test
Birds and reptiles both belong to the animal kingdom. Reptiles are ectothermic and have three-chambered hearts, whereas birds are endothermic and have four-chambered hearts. Thus, option A is correct.
What are the characteristics of birds and reptiles?Birds and reptiles both belong to the kingdom Animalia and are chordates. They both have vertebral columns and the presence of the backbone. They share many similarities and differences in their physical appearances.
The birds are endothermic and can maintain constant body tempearture regardless of the external environment. While reptiles are ectothermic (cold-blooded) and regulate their temperature based on the external environment.
The birds have four-chambered hearts like mammals that separate the oxygenated from the de-oxygenated blood, whereas the reptiles have three-chambered hearts with one ventricle and two atria.
Therefore, the birds are endothermic, and reptiles are ectothermic.
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what are the sugar-making structures in plant cells?
Answers
Answer:
Chloroplasts
Explanation:
they make sugar during photosynthesis.
when not engaged in the processes leading to cell division, how many chromosomes from your mother are present in the nucleus of each of your somatic cells?
Answers
Answer: the answer is
23
SC.912.L.16.1 (high)
5. Coat color in Labrador retrievers is determined by genes at two loci, B, and E, where B
and E are dominant, and b and e are recessive. The genes follow the Mendelian law of
independent assortment. Black dogs must have at least one dominant allele for both B
and E. Chocolate colored dogs must have at least one dominant B, and be homozygous recessive for e. True yellow dogs must be homozygous recessive at both
loci. If two dogs with genotypes BbEe and BbEe are bred, what is the probability that
they will have a puppy that has the genotype of a true yellow dog?
A. 1 in 16
B. 3 in 4
C. 3 in 16
D. 9 in 16
Answers
Answer: 3 in 16
Explanation: BbEe provides the most possible combinations for offspring in labs. This is because each dog can possibly give two of any of the genes. Yellow labs can only have two little e genes (ee), if they have a single E gene, they will either be brown or black. But within the ee genes, they can have two other combinations of their other genes. All combinations for a yellow lab are:
Bbee
BBee
bbee
But those are only the yellow combinations, there are 13 other combinations. Making it a 3/16 chance.
How are Protista similar to bacteria
Both are comprised of
Answers
Answer:
Both bacteria and protists have cell membranes made of chemicals called phospholipids
dna polymerase i requires two different components of dna, primer and template. what functions does the template component form?
Answers
Answer:
Explanation:
The template component of DNA is a single-stranded DNA molecule that provides the information needed to synthesize a complementary DNA strand. During DNA replication, the template strand acts as a guide for the DNA polymerase enzyme, which reads the sequence of bases on the template strand and synthesizes a new strand of DNA by adding complementary nucleotides.
The template strand determines the order of the nucleotides in the new DNA strand, as the DNA polymerase enzyme adds nucleotides in a sequence complementary to the template strand. This process ensures that the two new DNA strands formed during replication are identical to the original DNA molecule.
In addition to providing the sequence information for DNA replication, the template strand also serves as a checkpoint for proofreading and error correction during replication. As the DNA polymerase enzyme adds nucleotides to the new strand, it checks each base for accuracy and corrects any errors in the sequence.
Therefore, the template component of DNA plays a crucial role in DNA replication by providing the sequence information necessary for the synthesis of a complementary DNA strand and ensuring the fidelity of the genetic code.
If m∠4 = 35, find m∠2. Explain.
35; ∠2 and ∠4 are alternate interior angles, so m∠2 = m∠4.
145; ∠2 and ∠4 are supplementary angles, so m∠2 = 180 − m∠4.
55; ∠2 and ∠4 are complementary angles, so m∠2 = 90 − m∠4
35; ∠2 and ∠4 are corresponding angles, so m∠2 = m∠4.
Answers
The correct answer is option 1.
From the accompanying photo,
Right triangle CAB has three sides.
Consequently, m1 = 90°.
Similarly, mACD = 90°
∠ACD = 90° = ∠ACB + ∠BCD
= m∠3 + m∠4 = 90°
Because m4 = 35°,
m∠3 + 35° = 90°
m∠3 = 90° - 35° = 55°
In the ABC triangle,
∠ACB + ∠CBA + ∠BAC = 180° [triangle property]
∠3 + ∠2 + ∠1 = 180°
55° + ∠2 + 90° = 180°
∠2 + 145° = 180°
∠2 = 180° - 145° = 35°
Because ABCDBC is a transversal,
The lines are referred to as transversal lines when a straight line crosses two or more parallel lines. Any time this transverse line crosses a coplanar line, alternate angles—also referred to as exterior or interior alternate angles—are created.
In light of this, ∠2 = ∠4 = 35° [Alternate Interior Angles].
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A lewis structure is a two-dimensional representation of a molecule that does not necessarily show what shape that molecule would take in three dimensions. From the given lewis structure and what you know about vsepr theory, identify the shape of the molecule.
Answers
From the given lewis structure and what we know about VSEPR theory, the shape of the molecule will be bent shape or V shape.
VSEPR theory tells us about the shape of a molecule based on the number of both, bond pairs and lone pairs of electrons around the central atom of the molecule.
In the given molecule Y is the central atom.The central atom has two lone pairs of e-.It makes 2 sigma bonds with two X atoms, so there are two bong pairs of e-.So, there are 2 lone pairs and 2 bond pairs of electrons, around the central atom. VSEPR theory states that a molecule has a bent shape or V shape if the central atom is surrounded by two lone pairs and two bond pairs of e- in lewis structure.
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