members of pairs of homologous chromosomes line up opposite each other at the cell’s midline
Answers
Homologous chromosomes line up opposite each other at the cell's midline, a process known as synapsis.
During cell division, homologous chromosomes line up opposite each other at the cell’s midline, a process known as synapsis. Homologous chromosomes are chromosomes that have the same genetic information but may have different alleles. Synapsis is important for proper chromosome segregation during cell division, ensuring that each daughter cell receives an accurate copy of the genetic information.
In meiosis, the process of producing sperm and egg cells, synapsis is followed by crossing over, a process in which genetic material is exchanged between homologous chromosomes. This process increases the genetic diversity of the offspring and is important for the evolution of populations.
In mitosis, the process of producing new cells, synapsis is followed by chromosome separation, in which the homologous chromosomes are separated and distributed to the two daughter cells. This process ensures that each daughter cell receives an accurate copy of the genetic information.
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Related Questions
How does a new mammoth egg cell get chromosomes from each of the parents?
Answers
Answer:
An egg or sperm only has half of the parent's sex chromosome pair. An egg will always have an X chromosome, since the woman's sex chromosome pair only has Xs. Sperm can have either an X chromosome or a Y chromosome. If a sperm with an X chromosome fertilizes the egg, the new cell will have two X chromosomes. One came from the father's sperm and one came from the mother's egg. Since the sex chromosome that is made is XX, the cell will grow into a girl baby.
Explanation:
Hope this helped Mark BRAINLIEST!!
mixing occur before the chromosomes are sorted into individual sperm or egg cells. Chromosomes from each pair in a mother or father, respectively, make contact and exchange pieces of DNA, creating hybrid chromosomes.
What is chromosome ?A chromosome is a thread-like structure present in the nucleus of cells such as plant, animal and human cells and it is made of a molecule of DNA (Deoxyribonucleic acid) and histone proteins.
It is composed of three components, DNA, proteins and RNA, amount of the DNA content ranges from 30 to 40 %, the amount of proteins from 50 to 65%, and small amount of RNA from 1 to 10%.
Two types of protein present in DNA such as histone and non-histones proteins, histone constitute large amount (90% of total protein), whereas non-histone is present in small amount (around 10% of total protein).
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what do foxes sleep on? A.beds B.fox nest C.trampling
Answers
Answer: B. Fox nests
Explanation:
Foxes dig out dens to provide a safe underground space that is mostly used for raising fox cubs, also called kits. In urban areas, the dens - known as earths - are commonly located under sheds, but they can also be among tree roots, in bushes or on railway embankments.
I need to know the rest of the answers
Answers
Capillary action cohesion, Amazing water adhesion, bubbling beakers specific heat capacity, Magic pepper polarity , and pouring water demo capillary action.
What are the differences between Adhesion and cohesion ?Like molecules (of the same substance) have the ability to adhere to one another due to attraction to one another, which is known as cohesion. Adhesion is the ability of certain molecules or surfaces to stick to one another. Solids, for instance, have high cohesive qualities, which prevent them from adhering to surfaces with which they come into touch. Gases, however, have a poor cohesiveness. Water is cohesive and sticky in nature. A sphere is created when water molecules adhere to one another. Cohesive forces have produced this. Water molecules reaching the container's surface are at a greater level when enclosed in a tube (see Meniscus). This is a result of the adhesive force between the molecules of water and those of the container.
Magic pepper is an experiment in which pepper polarizes easily , the electrons move to one end of the pepper gain and protons move to the other end . Capillary action is the movement of water within the spaces of a porous material due to the forces of adhesion , cohesion and surface tension.
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Ralph has type B blood and his wife, Rachel, has type A blood. They are very shocked to hear that their baby has type O blood. They think that a switch might have been made at the hospital. Can this baby be theirs?
Yes, if both parents are heterozygous for their blood types.
No, this baby is not theirs.
Yes, if both parents are homozygous recessive.
O Yes, if Ralph is homozygous and Rachel is heterozygous.
Answers
Answer: Yes, if both parents are heterozygous for their blood types.
Explanation: A child with type O blood can have parents with type A, type B, or type O blood, but not type AB. Conversely, if two parents both have type O blood, all their children will have type O blood.
PLEASE!!! HURRY. GIVING BARINLISTS!
Glucose gives a plant _____ so it can grow.
A. chlorophyll
B. energy
C. oxygen
D. food
E. sunlight
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Answer:
B energy i hope it is helpful have a nice day
Hi, could someone tell me what should be in the blank space of my concept map about the cell membrane?
Answers
What is binary fission?
A form of sexual reproduction used by some unicellular organisms to produce two cells that are genetically different from each other and from the parent cell.
A form of asexual reproduction used by some multicellular organisms to produce two cells that are genetically identical to each other and to the parent cell.
A form of asexual reproduction used by some unicellular organisms to produce two cells that are genetically identical to each other and to the parent cell.
A form of sexual reproduction used by some unicellular organisms to produce two cells that are genetically identical to each other and to the parent cell.
Answers
Answer:
The 3rd answer
Explanation:
Binary Fission is the process of cell division in prokaryotes (bacteria). It is a type of asexual reproduction. If the parent cell has 18 chromosomes than each daughter cell will also has 18 chromosomes.
Environmental factors carn have various effects on ecosystems. In August 2005, Hurricane Katrina caused signifcant damage in several states along the Gulf Coast, including Alabama, Mississippi, and Louisiana. Thousands of people were evacuated from their homes due to flooding and other damage caused by the storm. What environmental impact would Hurricane Katrina not have caused? Oearly onset of spring change in marine ecosystems Ochange in animal migration change in habitats
Answers
Early onset of spring change in marine ecosystems. Hurricane Katrina caused signifcant damage in several states along the Gulf Coast, including Alabama, Mississippi, and Louisiana.
What is Hurricane Katrina?
Hurricane Katrina would not have caused early onset of spring. The damaging winds/rains of the hurricane would have caused a change in marine ecosystems and habitats since the heavy winds/rain and storm surge eroded beaches, took down trees, and flooded out areas.
As a result, animal migration also changed since some habitats that animals would normally migrate to were destroyed and no longer existed. The early onset of spring (aka. seasonal change) is not driven by individual weather systems.because it looks like the question is asking what it wouldn’t affect, and I’m sure if the people had to leave, that animals would’ve all had to leave as well.
Therefore, Early onset of spring change in marine ecosystems. Hurricane Katrina caused signifcant damage in several states along the Gulf Coast, including Alabama, Mississippi, and Louisiana.
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an endocrine gland is a type of organ group of answer choices required for remodeling bone. where hormones are produced and then released into the blood. where neuronal signals are generated. restricted to the production of growth factors. none of the choices are correct.
Answers
An endocrine gland is a type of organ (b) where hormones are produced and then released into the blood.
Endocrine glands discharge their specific compounds into the circulation without passing via a duct, in contrast to exocrine glands (sweat, salivary). These endocrine glands are part of the body's regulatory system, and they generate hormones that aid in controlling how cells and tissues operate. There are several glands that are only found in males (testes) or females (ovaries).
Hormones are molecules that have an impact on a wide range of physiological processes, from hunger, reproduction, and development to far more complex processes like human emotions and behaviour. The endocrine system is made up of the nine principal glands in our bodies, which generate these hormones, as well as other organs that perform auxiliary jobs.
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Hibernation is _______.
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Answer:
PROCESS OF SLEEPING FOR MONTHS .
LIKE BEARS,BATS,ETC
Answer:
the condition or period of an animal or plant spending the Winter in a dormant state.
The therapeutic index of a protein synthesis inhibitor is less than the therapeutic index of a cell wall inhibitor because _____. transpeptidase reactions occurs in all organisms using the same enzymes bacterial cells and host cells both use ribosomes for protein synthesis cell wall inhibitors are synthetic, not naturally occurring protein synthesis inhibitors are less stable in stomach acid
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Answer:
The correct answer is "bacterial cells and host cells both use ribosomes for protein synthesis".
Explanation:
The therapeutic index is defined as the ratio of the toxic dose to the therapeutic dose, which gives a comparison between the blood concentration at which a drug is toxic in comparison to the concentration at which the drug is effective. When comparing the therapeutic index of a protein synthesis inhibitor and a cell wall inhibitor, we can notice that the therapeutic index of a protein synthesis inhibitor is lower. This happens because both bacterial cells and host cells use ribosomes for protein synthesis, and since both target the ribosome, the therapeutic effect of the synthesis inhibitor is reached firstly.
Write a ""lifeline"" of a robin over the first year of its life. Include important events.
Answers
Answer: I hope that this helps you please give me brainiest
Robins are born in the spring or summer and are mature birds and ready to breed in the following spring or summer. They do not mate for life. Pairs usually remain together during an entire breeding season, which can involve two or three nestlings.
Since leaving the nest (fledgling), it takes another 10-15 days for babies to become good fliers and individual birds. The parents continue to feed their young throughout this time.
Explanation:
How long do robins live?
A. Most robins die their first year. But the lifespan goes up dramatically for the ones that survive that critical time, because they've learned so many important life skills. Of those that survive their first year, most wild robins live to be about 5 or 6. As of February, 2001, the longest-living banded wild robin ever recorded had survived 13 years and 11 months, according to the Bird Banding Laboratory at the Patuxent Wildlife Research Center. In captivity, robins have survived longer than 17 years.
Q. Do robins mate for life?
A. No, robins do not mate for life. Pairs usually remain together during an entire breeding season, which can involve two or three nestings. However, in spring, sometimes a male and female who mated the previous year will both return to the same territory and end up together for another year. This happens most frequently when they were successful raising babies the previous year.
Q. How long do robins stay in the egg? (egg stage)
A. About 12-14 days after the last egg was laid. (Robins lay one egg per day, for a total of 5-6 eggs in a clutch.)
Q. How long do robin babies stay in the nest (nestling stage)?
A. Baby robins jump from their nest when they are about 13 days old (but the range is 9 - 16 days old).
Q. When do young robins learn to fly? (fledgling stage)
A. After leaving the nest (fledging), it takes another 10-15 days for babies to become strong fliers and independent birds.
Q. How long does it take a robin to go from egg to independence?
A. Here is a summary:
Life Cycle Stage # Days
Egg 12 - 14
Nestling 9 - 16
Fledgling 10 - 15
Total 31 - 45
Q. How old are robins when they mate?
A. Almost one year old. Robins are mature adults and ready to breed in the spring that follows the spring or summer they were born.
5. In the following picture, label each of the letters
with what is occuring
Answers
Answer: see explanation
Explanation:
A. substrate
B. Active site
C. Enzyme binds with substrate
D. Active site of enzyme
E. Products leaving active site
Simplified enzymatic reaction. The substrate reversibly binds to the active site of the enzyme, forming the enzyme-substrate (ES) complex. The bound substrate is converted to product by catalytic groups in the active site, forming the enzyme-product complex (EP). The bound products are released, returning the enzyme to its unbound form, ready to catalyze another round of converting substrate to product.
Which term describes the ability of a substance to change the genetic characteristics of an organism
Answers
Answer:
Transformation
the ability of a substance to change the genetic characteristics of an organism
Descriptive epidemiology characterizes the amount and distribution of disease within a population and enables the researcher to:
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Answer:
Descriptive epidemiology characterizes the amount and distribution of disease within a population and enables the researcher to: Generate testable hypotheses regarding etiology and Evaluate trends in health and disease within a population.
Explanation:
in the mvgc golf course renovation, the greens were sodded. what is/was the major disadvantage to sodding the greens?
Answers
Sodding the greens in the MVGC golf course renovation can have a major disadvantage of not allowing the roots of the turf to penetrate the soil as deeply as they could if the greens were seeded. This can lead to shallow root systems and potentially weaker grass growth, as well as making it harder for the greens to absorb nutrients and water.
Additionally, sodding can be more expensive than seeding, and there may be a risk of the new sod not taking root properly or becoming uneven over time. However, sodding can provide an immediate improvement in appearance and playability, and may be the preferred option in certain circumstances.
In the MVGC golf course renovation, the major disadvantage to sodding the greens was the increased cost and maintenance required. Sodding involves laying mature turf on the prepared ground, which can be more expensive than seeding. Additionally, sodded greens demand more intensive maintenance, such as watering, fertilizing, and mowing, to ensure proper establishment and root growth. Moreover, there may be a longer waiting period before the greens are ready for play, as the sod needs time to firmly root itself in the soil. Overall, these factors contribute to the higher costs and extended maintenance associated with sodding greens.
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True/false, if false explain why the conducting cells of phloem are thin-walled, metabolically active sclerenchyma cells.
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Phloem transports the food which formed in leaves during photosynthesis .
Describe the structure of phloem.The many components of phloem include companion cells , seive tubes , phloem parenchyma and phloem fibres . Sugar and nutrients are moved up and down the plant's seive cells using sieve tubes. Companion cells manage the seive tube's Operation. Phloem parenchyma gives the plant its mechanical sturdiness.
The phloem sclerenchyma is comprised of sclerenchyma cells that are rather associate with providing mechanical support than conducting materials. It includes the phloem fibres and the sclereids.
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why was natural selection difficult for darwin to fully explain
Answers
Answer:
due to the variation some individuals would be better adjusted toward the surroundings than the other
1. What is the relationship between DNA and gene expression? How do they depend on each other? 2. Why is it important for the “on” and “off” mechanism of gene regulation? 3. Since there are DNA segments that do not code for amino acids, what is their purpose? simple explanations and URL of the websites used for answers.
Answers
When we are talking of DNA, genes, we must remember that when a gene is transcripted to primary RNA it is formed by two types of segments, exons, and introns. Those coding are exons and those not coding are Introns. About these last (introns) there has been a wide discussion about its function, there are some who even call it junk DNA. Their function is not quite understood yet, there has been a recent increase in the interest in these noncoding sequences and several hypotheses regarding their function in the chromosome. It has been proposed that introns could motivate recombination and remotion of certain genetic groups through the evolutive process, recent evidence indicates that Introns contribute to maintaining stability, sometimes suppressing the activity of other genes, helping in the evolutive process.
A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order of the bases on the opposite strand of DNA?
cytosine, adenine, adenine, and thymine
cytosine, thymine, thymine, and adenine
thymine, guanine, guanine, and cytosine
thymine, adenine, adenine, and cytosine
Answers
Answer:
thymine, guanine, guanine, and cytosine
Explanation:
The order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.
DNA and complementary base pairingThe deoxyribonucleic acid (DNA) is a double helix composed of two long chains of sequential nucleotides.
In DNA there are four classes of nucleotides, each containing one different nitrogenous base (i.e., Adenine, Guanine, Cytosine, Thymine).According to the base pair rules of complementarity, Adenine always pairs with Thymine, whereas Guanine always pairs with Cytosine.In conclusion, the order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.
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which statement best describes the organization of the taxa shown in the image
A. as you move down the structure, the groups become more general
B. there are more organisms in each group as you move down the structure
C. as you move up the structure the group becomes more specific
D. as you move down the structure, there are fewer organisms in each group
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Answer:
D. as you move down the structure, there are fewer organisms in each group.
Explanation:
When we move down from kingdom to species, the number of organisms decreases because more closely related organisms are placed down the group. There are fewer kingdoms that have a large number of organisms in it and has less similarities among them and when we move down, the number of organism decreases in number and at the end there are few organisms are present in it which is more closely related to each other.
The chemical elements essential to life
Answers
Answer:
Oxygen, hydrogen, nitrogen and phosphorus
Explanation:
Answer:
Hydrogen, Oxygen, Carbon and Nitrogen
What is different about parasitism compared to the other biological relationships such as mutualism, predation, competition, and commensalism? A. A parasitic organism causes harm to other organisms as a result of the symbiotic relationship. B. The parasite must utilize a host organism that may or may not die as a result of the relationship. C. The host is neither helped nor hurt by the relationship and interaction with the parasitic organism. D. Both the parasite and the host are helped by the relationship and interaction with the parasitic organism.
Answers
Answer:
B. The parasite must utilize a host organiam that may or may not die as a result of the relationship
Explanation:
The reason it is B is because a parasite usually has to feed off the host this can vary from taking nutients to Something more severe like controlling the organizim to make more of the parasite.
Need immediate help!!
Answers
Answer:
A
Explanation:
The cell would likely not have fewer chromosomes than the parent because those cells are formed from nondisjunction and not base mutations and those cells are usually not viable
the cell would not produce more proofreading proteins to eliminate future mutations --> the concentration of proofreading proteins does not change in response to a singular mutation
the cell would not be more likely to have an environmental mutation because those occur at random
1.- Leo este poema e identifico el tipo de estrofas que lo componen.
Hoy que has vuelto, los dos hemos callado,
y solo nuestros viejos pensamientos
alumbraron la dulce oscuridad
de estar juntos y no decirse nada.
Solo las manos se estrecharon tanto
como rompiendo el hierro de la ausencia.
¡Si una nube eclipsara nuestras vidas!
Deja en mi corazón las voces nuevas,
el asalto clarísimo, presente,
de tu persona sobre los paisajes
que hay en mí para el aire de tu vida
plsss aiudaaaaaaa
Answers
El tipo de estrofas que componen este poema son cuartetos y tercetos.
En los poemas, una estrofa representa una seria de líneas que forman una unidad. Está unidad se puede reconocer porque:
Inicia en mayúscula.Termina con un punto.Además, las estrofas se clasifican de acuerdo a su número de líneas o versos. Esta clasificación incluye:
Pareados: Dos líneas.Tercetos: Tres líneas.Cuartetos: Cuatro líneas.Quintetos: Cinco líneas.De acuerdo a lo anterior, el poema anterior tiene dos cuartetos y un terceto.
Primer cuarteto: Desde "hoy" hasta "nada" (hay 4 líneas).Terceto: Desde "solo" hasta "vidas" (hay 3 líneas)Segundo cuarteto: Desde "Deja" hasta "vida" (hay 4 líneas)Aprenda más en: https://brainly.com/question/25457320
Estuaries are often called __________ __________ because many species of fish and wildlife rely on estuaries' sheltered waters as spawning places for their young.
Answers
Estuaries are often called "nurseries of the sea" because many species of fish and wildlife rely on estuaries' sheltered waters as spawning places for their young.
The species of fish and wildlife that rely on estuaries for their survival vary depending on the region's location and type of estuary. The species of fish and wildlife found in estuaries include oysters, crabs, and clams, as well as migratory birds, marine mammals, and numerous species of fish.
Estuaries are an important ecosystem that provides food, shelter, and protection for a diverse range of marine life. They are also essential in regulating water quality and controlling the effects of pollutants in marine and coastal environments. Therefore, the protection and preservation of estuaries is essential to maintaining the health of marine and coastal ecosystems.
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For a species to be on the endangered list there must be ____ organisms of the species left.
2,000
2,500
1,000
3,000
Answers
Answer:
2,500 i belive
Explanation:
which individual has a valid reason to take a vitamin/mineral supplement?
Answers
Answer:
If the have a vitamin deficent or anemia as well as a doctor remoceded them increase in their viamin intake.
Explanation:
what is the meaning of force
Answers
Answer:
strength or energy as an attribute of physical action or movement.
Hello there I hope you are having an great Day :) Your Question, what is the meaning of force? the meaning of force is force meaning that energy as an attribute of physical action or movement, this meaning that saying of an example that a object changes movement like he was thrown backwards by the force of the explosion this meaning because of the power of the explosion it push him back. Hopefully that help's you :)
The following list describes a certain set of objects in our solar system.
no solid surfaces
thick atmospheres
many rings and many moons
Which is the most likely set of objects described by this list?
Answers
The correct answer would be inner planets, Terrestrial planets is another name for the inner planets.
What are inner planets?There are a total of eight planets in our solar system. The outer planets and the inner planets are two other major groups into which planets can be divided. Earth, Mercury, and Mars are considered inner planets since they are situated within the asteroid belt (region of asteroids between Mars and Jupiter). Furthermore, because they are made of minerals and metals, inner planets differ from other planets in terms of their composition. These planets are also referred to as terrestrial planets because of their makeup.
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