1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Allisa [31]
3 years ago
9

Explain how the random alignment of homologous chromosomes during metaphase I

Biology
1 answer:
borishaifa [10]3 years ago
3 0

The randomness in the alignment of recombined chromosomes at the metaphase plate, coupled with the crossing over events between nonsister chromatids, are responsible for much of the genetic variation in the offspring. To clarify this further, remember that the homologous chromosomes of a sexually reproducing organism are originally inherited as two separate sets, one from each parent. Using humans as an example, one set of 23 chromosomes is present in the egg donated by the mother. The father provides the other set of 23 chromosomes in the sperm that fertilizes the egg. Every cell of the multicellular offspring has copies of the original two sets of homologous chromosomes. In prophase I of meiosis, the homologous chromosomes form the tetrads. In metaphase I, these pairs line up at the midway point between the two poles of the cell to form the metaphase plate. Because there is an equal chance that a microtubule fiber will encounter a maternally or paternally inherited chromosome, the arrangement of the tetrads at the metaphase plate is random. Thus, any maternally inherited chromosome may face either pole. Likewise, any paternally inherited chromosome may also face either pole. The orientation of each tetrad is independent of the orientation of the other 22 tetrads.

Explanation:

You might be interested in
According to the theory of natural selection, a species that lacks the variations necessary to adapt to a changing environment w
Drupady [299]

According to Darwin's theory of natural selection, struggle for existence  leads to survival of the fittest that means natural selection only tends to favour those organisms that are most fit to survive with the reproductive age in a particular environment and to produce offspring.

Those organisms which fail to adapt to acclimatization are likely to become extinct because they won't be able to survive in the changing environment.

<h3>What is acclimatization?</h3>

Acclimatization is refers to the process where an individual organism adjusts to a change in its environment, allowing it to maintain fitness across a different of environmental conditions.

An example of Darwin theory is if dogs which have a good sense of smell are fit to survive than dogs without a good sense of smell, then all dogs have to evolve a good sense of smell because those with a bad sense of smell die out.

For more information regarding natural selection, refer:

brainly.com/question/427282

#SPJ4

4 0
3 years ago
The chromosome undergoes a transloation mutation during its replication. Which image best represents the translocation
vladimir1956 [14]
Can you provide an image?
3 0
3 years ago
A banana plant produces rhizomes, which are involved in ______.​
stira [4]
Rhizomes are involved in the production of stems and “reproduction” of new plant parts. It has been theorized that rhizomes, when removed, can grow into completely new (but genetically identical) plants! It’s kind of like budding, so it’s pretty cool.

I hope I helped!
4 0
3 years ago
Read 2 more answers
10. What is another name for the large intestine?
erma4kov [3.2K]

Answer:

I think it is colon because the other ones did not make sense

Hope you have a good day

4 0
3 years ago
Read 2 more answers
Water is most likely to be condensing when we observe which of the following atmospheric conditions?.
Kitty [74]
Answer: B

Condensation is a process via which a liquid directly converts to a gaseous state, skipping the liquid state altogether. Therefore, a very cloudy sky is an example of water being converted to gaseous state directly.
6 0
3 years ago
Read 2 more answers
Other questions:
  • The human genome project has determined that a person who carries a marker for a certain type of cancer will inevitably develop
    11·1 answer
  • Choose the incorrect statement(s):
    8·1 answer
  • the structure and properties of the cell wall allow it to be selective and maintain homeostasis true or false
    14·1 answer
  • If mitotic cell division is the only way a particular species of single-celled organism can reproduce, it is most likely that
    7·1 answer
  • An experiment was designed to investigate the effect of caffeine on the rate of
    13·1 answer
  • If meiosis produces haploid cells, how is the diploid number restored for those organisms that spend most of their life cycle in
    10·1 answer
  • Your mother and your grandmother were right when they said to eat your carrots for healthy eyes. Beta carotene, a carotenoid fou
    15·1 answer
  • How do the bats move to meet their needs from surroundings and do they move fast or slow?
    14·1 answer
  • What is the relationship between proto-oncogenes and oncogenes?
    8·1 answer
  • Q1: The distance between wave crests is called___
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!