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andre [41]
3 years ago
14

What meiotic process, relative to the number of chromosomes of a given species, accounts for a significant amount of genetic var

iation in gametes?
Biology
2 answers:
Gnoma [55]3 years ago
8 0
Prophase 1 of meiosis <span>relative to the number of chromosomes of a given species, accounts for a significant amount of genetic variation in gametes.</span>
Anettt [7]3 years ago
3 0

The pachytene stage of the prophase I in the meiosis I division, the process of recombination occurs. The recombination is the process of exchange of gentic material of the same allele between the sister chromatids.

As the recombination result in the exchange of genetic material between sister chromatids, this result in the genetic variations in the progeny.

So, in meiosis 1 the recombination at the pachytene stage of prophase 1 causes a significant amount of genetic variation.

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Read 2 more answers
Plz help ASAP! THANK YOU
marysya [2.9K]

Answer:

According to the diagram, what is occurring in step 7 is cytokinesis, with the separation of two daughter cells, following cell division.

Explanation:

Cytokinesis is a process that occurs at the end of mitosis or meiosis, being the final step of cell division. This mechanism allows the <u>separation of the two daughter cells</u>, with equal distribution of cytoplasm and formation of cell membrane, differentiating into two independent cells.

In the diagram it can be observed (step 7) that after the division process —in yellow— two arrows pointing to two cells are evident, which implies the process of cytokinesis.

Prior to the cytokinesis process, karyokinesis occurs, which is the separation of nuclei and formation of the nuclear membrane.

In animal cells, karyocinesis occurs by the effect of a ring of actin and myosin that helps to force the separation. In the plant cell, the fragmoplast is formed, a septum that induces the separation of the daughter cells.

The other options are not correct because:

  • <u><em>Cell growth</em></u><em> occurs in G1 phase.</em>
  • <u><em>Cell preparation</em></u><em> occurs in interphase.</em>
  • <u><em>DNA replication</em></u><em> occurs in S phase.</em>
  • <u><em>Mitosis</em></u><em> is represented in yellow, and involves 4 phases.</em>

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