A pea plant with yellow seeds is crossed with a pea plant with green seeds (p1 generation). all 131 offspring (f1 generation) have yellow seeds. what are the likely genotypes of the p1 plants?
Answers
In this case, since all 131 offspring of the P1 generation have yellow seeds, it suggests that the green seed trait is not expressed in the F1 generation. From this, we can infer that the genotype of the P1 plants is heterozygous.
In genetics, capital letters are used to represent dominant alleles and lowercase letters represent recessive alleles. Let's use "Y" to represent the yellow seed allele (dominant) and "y" to represent the green seed allele (recessive).
Since all the F1 offspring have yellow seeds, it means that they all inherited at least one dominant allele (Y) from their P1 parents. Therefore, both P1 plants must have carried at least one copy of the dominant allele (Y).
However, since the F1 generation did not have any green seeds, it means that neither P1 parent had a copy of the recessive allele (y). This suggests that both P1 plants were heterozygous, with the genotype Yy.
To summarize, the likely genotypes of the P1 plants are Yy, indicating that they both carried one dominant allele (Y) for yellow seeds and one recessive allele (y) for green seeds.
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Related Questions
(PLEASE HELP IT IS DUE TODAY)
1. Which statement best describes stem cells?
A. Stem cells are commonly found in the brain of adults.
B. Stem cells are flowing through our veins delivering oxygen to the other cells of your
body.
C. Stem cells are only found in prokaryotes.
D. Stem cells are unspecialized cells that have the potential to differentiate into a wide
variety of cell types.
Answers
Answer:
It might be A
Explanation:
It might be A because stem cells are usually found in brain, blood, bone marrow, muscle, skin, heart, and liver tissues.
Answer:
the answer to that one is D
Please help. The DNA content for an organism is analyzed. The results showed that 21% of the nucleotides contained the nitrogenous base
adenine. What else can be inferred based on this data? Select ALL that apply.
A) The percentage of cytosine is 29%.
B) The percentage of adenine is 21% for all organisms.
C) The percentage of thymine in the organism is also 21%.
D) The percentage of guanine in the organism is also 21%.
E) The percentage for cytosine in the organism is also 21%.
Answers
Answer:
A and C
Explanation:
I did the USA tp and got a 100 so you can trust me
If the results showed that 21% of the nucleotides contained adenine, then the percentage of cytosine is 29% and the percentage of thymine in the organism is also 21% (Options A and C).
DNA is a double helix molecule composed of two long chains of nucleotides.
In DNA, there are four types of nucleotides, each containing a different nitrogenous base: adenine, guanine, thymine and cytosine.
According to the base pair rules, adenine always pairs with thymine, whereas guanine pairs with cytosine.
In consequence, the percentage of adenine is equal to thymine, whereas the remining percentage is equal to the guanine + cytocine (29 + 29 = 58 >> 58 + 21 + 21 = 100).
In conclusion, if the results showed that 21% of the nucleotides contained adenine, then the percentage of cytosine is 29% and the percentage of thymine in the organism is also 21% (Options A and C).
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Assume that two characters are controlled by genes we will generically label as A and B. In one instance A and B will be on different chromosomes and in another instance they will be located close to each other on the same chromosome (linked). Using this information, fill in the following table.
Answers
Independent genes are inherited according to the law of independent assortment, while Linked genes are inherirted together. Linked genes: 1) 3:1. 2) No. 3) AB, ab. Independent genes: 1) 9:3:3:1 2) Yes. 3) AB, Ab, aB, ab.
What are independent assortment, linked genes and independent genes?Independent assortment is a law that states that the alleles from two or more different genes distribute independently from each other in gametes.
A gamete receives an allele from a gene that does not depend on nor influence the allele of another gene in the same gamete. This can only be applied to independent genes.
These genes segregate independently after crossing over because they are located far away from each other.
Some other genes, however, are too close to each other and do not segregate independently. These are the linked genes, and they do not exhibit an independent distribution, and they inherit together more frequently.
In the exposed example,
Diallelic Gene ADiallelic Gene BWe will assume these genes express complete dominance.
Linked genes
1)
Parentals) AaBb x AaBb
Gametes) AB ab AB ab
Punnett square) AB ab
AB AABB AaBb
ab AaBb aabb
F1) 1/4 AABB + 2/4 AaBb : 1/4 aabb
2/4 of the progeny is exprected to express the dominant traits, while 1/4 is expected to express the recessive traits.
Phenotypic ratio ⇒ 3:1
2)
No, the law of independent assortment does not apply
3)
Since the parents of these individuals are both true breeding, the gametes are AB and ab.
Independent genes
1)
Parentals) AaBb x AaBb
Gametes) AB Ab aB ab AB Ab aB ab
Punnett square) AB Ab aB ab
AB AABB AABb AaBB AaBb
Ab AABb AAbb AaBb Aabb
aB AaBB AaBb aaBB aaBb
ab AaBb Aabb aaBb aabb
F1)
9/16 individuals are expected to express the two dominant traits, A-B-
3/16 individuals are expected to express one of the dominant traits, A-bb
3/16 individuals are expeected to express the other dominant trait, aaB-
1/16 individuals are expected to express the recessive trait, aabb
Phenotypic ratio ⇒ 9:3:3:1
2)
Yes, the law of independent assortment does not apply
3)
Since the parents of these individuals are both true breeding, the gametes are AB, Ab, aB, and ab.
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Can you explain in simple words what is the “Theories of translocation” please?
Answers
Translocation theories refer to the process that explain water transportation in plants. We found three great theories: capillarity, root pressure and cohesion. Capillarity refers to the property that displays water when encounterd with small tubes, water "sticks and climbs" through the tube. The smaller the diameter the greater the climbing. Root pressure, refers to the effect salts and minerals absorbed in root, along water, exert in the content previously absorbed. That is, the "new generation of nutrients" pushes upward nutrients previously absorbed. Finally, cohesion theory is similar to capillarity. It refers to the property water molecules have to keep in close contact, due to their hydrogen bonds. Water forms a continuum through the plant. Water is losed through evapotranspiration in the leaves, so as water is losed, water from the stem starts to move. In that way water keeps the "continuum" and fills the gap that evaporated water left.
What do the letters on the top and the side of Punnett square represent?
Answers
Answer:
They represent the genotypes.
Explanation:
The letters on the top and the side of a punnett square represent the genotype of the species.
The letters on the top and the side of the Punnett square represent the ALLELES that are inherited from each gamete (sperm or egg).
The Punnett square is a diagram used in genetics to predict the genotypes obtained from a particular cross.
During fertilization, haploid gametes (sperm or egg) fuse to form a zygote.
Each gamete cell carries one copy of each gene variant or allele for a given locus, thereby one individual received one allele from the mother and receives the other allele from the father.
The letters in a Punnett square represent these alleles, which combine to form a particular genotype in offspring.
In conclusion, the letters on the top and the side of the Punnett square represent the ALLELES that are inherited from each gamete (sperm or egg).
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during which phase of the cell cycle is dna copied?
Answers
Answer:
S phase
Explanation:
What is an example of positive feedback?
O A herd of buffalo running away after one of them spots a lion.
O A pressure cooker valve opening to reduce the high pressure inside.
O A computer screen dimming when the battery gets low.
O A thermostat switching on an air conditioner when the temperature gets too hot.(wrong)
Answers
.
Research one of the reproductive disorders found on the website below, or any other that you find. Write an 800 word report on the disorder, including what its symptoms are, who it can affect most, and what other issues it can cause. Also include information about what medications or treatments are available, how they help control the disorder or relieve symptoms, and how effective they are. Make sure to cite your sources, and include statistics in a table or a graph based on information you found about your disorder.
Answers
Answer:
Preterm labor (PTL) is a condition in which contractions begin to open the cervix before 37 completed weeks of pregnancy. This condition can lead to premature birth and its associated complications, which is a leading cause of newborn morbidity and mortality worldwide. PTL affects approximately 11% of all pregnancies, and its incidence is increasing worldwide, making it a significant public health problem. This essay will discuss the symptoms, risk factors, potential complications, and available treatments for PTL.
The symptoms of PTL can be challenging to identify, as they may be similar to typical pregnancy symptoms. However, some warning signs of PTL include contractions that occur more than five times per hour, vaginal discharge or bleeding, pelvic pressure, or cramps. Pregnant women must contact their healthcare provider immediately if they experience these symptoms.
Various factors can increase a woman's risk of developing PTL. These risk factors include a history of PTL or premature birth, multiple gestations, uterine or cervical abnormalities, infection, diabetes, hypertension, and tobacco use. Women at high risk of PTL may need additional monitoring and medical care to reduce the risk of premature delivery.
PTL can lead to complications, including respiratory distress syndrome, intraventricular hemorrhage, sepsis, and necrotizing enterocolitis in the newborn. In addition, premature birth can increase the risk of long-term developmental disabilities, such as cerebral palsy, blindness, and deafness. Furthermore, mothers who deliver prematurely are at increased risk of postpartum hemorrhage, infection, and emotional distress.
The treatment options for PTL depend on the gestational age of the fetus and the severity of the symptoms. If PTL is detected early, interventions may be used to delay delivery and reduce the risk of complications. These interventions may include bed rest, hydration, tocolytic medications, and corticosteroids. Tocolytic medications, such as magnesium sulfate and nifedipine, relax the uterine muscles and slow or stop contractions. Corticosteroids like betamethasone and dexamethasone help mature the fetus's lungs and reduce the risk of respiratory distress syndrome. Delivery may be necessary if PTL continues despite these interventions or if the mother or fetus is in distress. In some cases, the delivery may be delayed to allow for administering corticosteroids, which can improve the infant's outcome.
PTL is a common pregnancy complication that can lead to premature birth and its associated complications. The symptoms of PTL can be challenging to identify, making early detection and treatment crucial. Women at high risk of PTL should receive additional monitoring and medical care to reduce the risk of premature delivery. Treatment options for PTL may include bed rest, hydration, tocolytic medications, and corticosteroids. These interventions can delay delivery and reduce the risk of complications. However, in some cases, the delivery may be necessary to protect the health of the mother and fetus. Pregnant women must discuss the risks and warning signs of PTL with their healthcare provider and seek prompt medical attention if they experience any symptoms.
Source : https://medlineplus.gov/childbirthproblems.html
Explanation: ^^ Please give thanks and 5 star
How many TOTAL valence electrons are in the molecule H 2 O ? 8,2,6,1
Answers
Answer:
8
Explanation:
Hydrogen has 1 Valence electron, and H2O has 2 Hydrogen. Oxygen has 6 Valence electrons so do 2+6 = 8. 8 Valence electrons! (Or one full shell not consisting of the first shell.)
Use the table to answer the following question.
Gravity and inertia are the two forces that keep Earth in its orbit as it travels around the Sun. What would happen if the force of inertia disappeared?
A.
Earth would break apart.
B.
Earth would be pulled into the sun.
C.
Earth would leave the solar system.
D.
There would be no changes in Earth's orbital path
Answers
Answer:
D.
Explanation:
if the force of inertia disappeared there would be no changes in earth's orbital path.
the reasons is that earth would stop moving as soon as there was no longer any force being applied
How would you expect the spread of an airborne disease to be similar to and different from the spread of a foodborne disease and a person-to-person disease
Answers
Answer:
The airborne disease is only similar in the way that you must come in contact with infected air. There is no physical contact needed.
Explanation:
Answer: A. person to person
Explanation:
The graph shows that the disease spreads slowly at first, then rapidly, and slowly at the end. This pattern of transmission is most characteristic of a disease spread from one person to the next. When only one person has the disease, the rate of transmission is slow because that person may only meet a few others. But as the number of people with the disease increases, the number of meetings that spread the disease also increase. At this time, the disease can spread very rapidly. The disease spreads more slowly again when there are only a few people remaining that do not have the disease. With foodborne and airborne diseases, the rate of disease spread is most rapid when the disease first arises and the greatest number of possible victims are available. Graphs of foodborne and airborne transmission show the greatest rate of disease spread at the start of the outbreak.
FYI: This isn't my explanation this is the explanation the question gives! :) YW
The clinical microbiology laboratory can provide preliminary identification of microorganisms based on: a. microscopic examination of the specimens b. growth and biochemical characterization of the organisms c. immunologic techniques that detect microbial antigens d. all of the above e. none of the above
Answers
Clinical microbiology laboratory providing preliminary identification of microorganisms based on certain techniques. The correct answer is d. all of the above.
In a clinical microbiology laboratory, preliminary identification of microorganisms can be based on:
a. Microscopic examination of the specimens: This involves observing the morphology and arrangement of the microorganisms under the microscope.
b. Growth and biochemical characterization of the organisms: This involves culturing the organisms on different media and conducting biochemical tests to determine their metabolic capabilities.
c. Immunologic techniques that detect microbial antigens: This involves using specific antibodies to identify the presence of microbial antigens, which are unique molecules present on the surface of the microorganisms.
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Where in the plant does photosynthesis occur? *
A. Leaves
B. Flower
C. Roots
D. Stem
Answers
Answer:
It occurs in the leaves
A. Leaves
Explanation:
What is true about a trophic level in an ecosystem?
Select all that apply
The amount of energy flowing into secondary consumers must equal the
amount that flows into primary consumers.
The ecosystem is an isolated system.
The ecosystem is an open system
The amount of energy flowing into the secondary consumers is less than
the amount that flows into the primary consumers.
HHEELLPPPHHH
Answers
Without a cell membrane there could be no _______ and without cells there would be NO ____________________.
Answers
Answer:
I think it would be the following: Without a cell membrane there could be no cells and without cells, there would be NO organisms.
Please correct me if I'm wrong, hope I helped :)
What is biodiversity?
Answers
Answer:
Biodiversity is the biological variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.
Explanation:
Theres really no explanation.
The sun produces energy from matter in its core through the process of
Earth science.
Answers
Answer:
Nuclear fission is right answer
hope it helped you:)
the blastodisc is an early stage of development in the fertilized zygote. would you expect little, lots, or no mitotic activity in the blastodisc?
Answers
In the blastodisc, which is an early stage of development in the fertilized zygote, you would expect lots of mitotic activity.
The blastodisc is an early stage of development in the fertilized zygote of many animals, including birds and reptiles. It is a disc-shaped structure that forms on the surface of the yolk and contains the embryonic cells.
During the early stages of development, the blastodisc undergoes rapid mitotic cell divisions to increase the number of cells and initiate the formation of the embryo. Mitosis is the process of cell division where one cell divides into two identical daughter cells.
Since the blastodisc is responsible for the development of the embryo, it requires substantial mitotic activity to generate a sufficient number of cells for subsequent differentiation and organogenesis. These mitotic divisions allow the blastodisc to undergo further development and eventually form the various tissues and structures of the developing organism.
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It is difficult for molecules to pass through the phospholipid bilayer because.
Answers
It is difficult for molecules to pass through the phospholipid bilayer because like attracts like. The polar molecules are not able to enter the membrane due to attraction between polar molecules outside the membrane. Likewise, the non-polar molecules are not able to cross the membrane after entering. Therefore, no molecules can cross the membrane.
Phospholipid bilayer is the membrane composed of two layers of lipids surrounding the cell. The polar heads of the lipids are placed on the outer side, whereas the non-polar hydrophobic tails are all placed inside, away from the solvent molecules.
Polar molecules are those that have a positive charge at one end while negative on the other. For example HF is a polar molecule with H being slightly positive and F being slightly negative.
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Which of the following bones is adjacent to both the coronal and lambdoid sutures? A. Occipital bone. B. Sphenoid bone. C. Parietal bone. D. Zygomatic bone
Answers
The parietal bone is adjacent to both the coronal and lambdoid sutures.
Sutures refer to immovable joints that exist between most of the bones of the skull in which adjacent bones are joined firmly. There are various types of sutures present in the skull including sagittal, coronal, lambdoid, squamous, and more. The coronal suture joins the frontal bone to both parietal bones and the lambdoid suture joins both parietal bones to the occipital bone. The sphenoid bone and zygomatic bone are not adjacent to both coronal and lambdoid sutures, but the parietal bone is adjacent to both.
Hence, the correct answer is C. Parietal bone.
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The bone which is adjacent to both the coronal and lambdoid sutures is Occipital bone. So, the correct option is A. Occipital bone.
A suture is a fibrous joint that connects bones of the skull and unites most bones of the skull into a single unit. Because the skull bones in adults do not move, sutures are immovable joints. The point at which the sutures join is known as a fontanelle. There are four major sutures in the human skull: Sagittal, Coronal, Lambdoid, and Squamous.
The occipital bone is a flat, trapezoidal bone at the base of the skull that shields the brain and forms the skull's rear wall. It houses the cerebellum, a section of the brain that controls motor coordination, and also provides muscle attachment for many of the muscles that move the head and neck.
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1. What makes Charles Darwin an important person to learn about?
Answers
Answer: Charles Darwin is an important person to learn about because he is the scientist who developed the theory of evolution by natural selection. This theory explains how species change over time through the process of natural selection, where individuals with traits that are better suited to their environment are more likely to survive and reproduce.
Darwin's theory of evolution by natural selection has had a profound impact on the scientific understanding of the natural world, and it is considered to be one of the most important scientific theories of all time. It has been supported by a vast body of scientific evidence and has helped to explain a wide range of phenomena in biology, including the diversity of life on Earth and the adaptations of organisms to their environment.
In addition to his contributions to science, Darwin is also an important figure in the history of science. He was one of the first scientists to systematically study and document the process of evolution, and his work laid the foundation for many of the advances that have been made in the field of biology over the past 150 years. His ideas have also had a significant impact on other fields, including psychology, sociology, and anthropology. As such, learning about Charles Darwin and his contributions to science can help us to better understand the natural world and the forces that shape it.
An anaphylactic reaction occurs because of a/an toxin-exotoxin interaction. sympathetic-parasympathetic interaction. antigen-antibody interaction. alpha-beta interaction.
Answers
Answer:
antigen-antibody interaction.
Explanation:
An anaphylactic reaction also known as anaphylaxis can be defined as a severe short-term allergic reaction that usually occurs within seconds or minutes after being exposed to an allergen.
Basically, an anaphylactic reaction is potentially life threatening i.e it is capable of causing death to patients and as such a medical diagnosis is required and it must be treated by a medical professional (expert) immediately after exposure to an allergen.
Hence, an anaphylactic reaction occurs because of an antigen-antibody interaction.
An epinephrine (adrenaline) may be quickly administered (given) to the patient by the medical professional.
Some of the symptoms of an anaphylactic reaction are;
I. Running nose and sneezing.
II. Skin rash.
III. Dizziness, fainting, vomiting, paleness, diarrhea etc.
synovial joints have the greatest range of flexibility and motion. please select the best answer from the choices provided.
a.true
b.false
Answers
The statement that synovial joints have the greatest range of flexibility and motion is true.
What is Synovial joints ?Synovial joints are the most common type of joint in the body. They are characterized by a fluid-filled space between the bones, which allows for a great deal of movement. The shoulder and hip joints are examples of synovial joints.
The range of motion is substantially more constrained in other types of joints, such as cartilaginous and fibrous joints. Ligaments, which are bands of resilient tissue, hold together fibrous joints. The smooth, slick tissue known as cartilage holds cartilaginous joints together.
Therefore, synovial joints have the greatest range of flexibility and motion.
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14. Did all four children inherit exactly the same traits? Explain.
15.
If two children have the same traits, will they look exactly alike? Explain.
16.
Would any of the children look exactly like their parents? Explain.
I’ll give brainliest
Answers
Answer
r u sure u will though
Explanation:
If the sugar concentration in a cell is 4% and the concentration in a cell’s environment is 2%, how can the cell obtain more sugar?
Answers
For a cell to obtain more sugar the cell must use active transport to pump the sugar inside it .
Active transport is the movement of molecules across a cell membrane from a region of lower concentration to a region of higher concentration which occur against the concentration gradient . So , it requires cellular energy to achieve this action.
Main function of active transport is involves the movement of molecules from a region of lower concentration to a region of higher concentration with help of energy in form of ATP. examples of active transport include the absorption of glucose in the intestine of the human body and the uptake of minerals or ions into the root hair cells of plants.
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Which bases are found in a strand of DNA?
thymine, guanine, cytosine, uracil
guanine, cytosine, uracil, adenine
cytosine, glycine, adenine, thymine
adenine, thymine, guanine, cytosine
Answers
Explanation: Adenine always binds with thymine, and cytosine always binds with guanine.
What is 0.640 as a fraction in simplest form?
Enter the answer by filling in the boxes.
Answers
Answer:
16/25
Explanation:
0.640 = 640
____, cancelling one zero, we have
1000
= 64
___, cancelling by 4, we have
100
= 16
___
25
Starting with one molecule of glucose, the energy-containing products of glycolysis are:
A) 2 NAD+, 2 pyruvate, and 2 ATP
B) 2 NADH, 2 pyruvate, and 2 ATP
C) 6 CO2, 2 pyruvate, and 2 ATP
D) 2 FADH2, 2 pyruvate, and 4 ATP
Answers
Answer: D) 2 FADH2, 2 pyruvate, and 4 ATP
Explanation: Glycolysis starts with one molecule of glucose and ends with two pyruvate (pyruvic acid) molecules, a total of four ATP molecules, and two molecules of NADH. (credits to the internet)
Glucose is an important sugar in a person's metabolic cycle. identify the functional group circled. carboxylic acid ketone aldehyde ester alcohol
Answers
The functional group circled in glucose is the aldehyde group. It plays a crucial role in glucose metabolism by allowing glucose to participate in key reactions, such as glycolysis.
The functional group circled in glucose is the aldehyde group. The aldehyde group consists of a carbon atom double-bonded to an oxygen atom and single-bonded to a hydrogen atom. In glucose, the aldehyde group is located at the end of the molecule. This group is important because it allows glucose to participate in various metabolic reactions.
During the metabolic cycle, glucose undergoes a series of reactions to produce energy for the body. One of the key steps in this process is glycolysis, where glucose is converted into pyruvate. In this step, the aldehyde group of glucose is oxidized to a carboxylic acid group, forming pyruvate. This oxidation reaction releases energy that is captured in the form of ATP.
The functional group circled in glucose is the aldehyde group. It plays a crucial role in glucose metabolism by allowing glucose to participate in key reactions, such as glycolysis.
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At which location is the temperature of the ocean floor bedrock most likely highest?
1
A
2
3.
B
C
D
Answers
Seafloor bedrock is younger near the ridge and older farther away.
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