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julsineya [31]
3 years ago
13

During which part of meiosis (meiosis I or meiosis II) do the two alleles of a gene separate? During which phase does the separa

tion occur? (Assume no recombination.)
Biology
2 answers:
Alex Ar [27]3 years ago
8 0

Answer:

meiosis 1, anaphase

Explanation:

Meiosis is a type of cell division that consists of two rounds of cell division known as Meiosis I and Meiosis II, and one round of DNA replication, thereby the resulting cells (gametes) contain half of the genetic material found in somatic (body) cells. Both Meiosis I and Meiosis II can be divided into the following phases: Prophase, Metaphase, Anaphase, Telophase and Cytokinesis. Alleles of a gene separate during the anaphase of Meiosis I (i.e., Anaphase I), because homologous chromosome pairs separate during this phase of the cell cycle.

Ratling [72]3 years ago
6 0

Answer:

During the ANAPHASE of MEIOSIS I, <em><u>IF</u></em> there <u><em>is no recombination</em></u>, the two alleles of a gene separate                

Explanation:  

Meiosis is a process by which, from a diploid germ cell (2n), four daughter cells with a haploid chromosome number (n) are produced. Each daughter cell has half of the chromosomes of the original one. There are two phases in meiosis: the first one in which occurs a chromosome´s reduction division, and the second one where the cell suffers a new division, but this one is not a reductive one.  

  • If there is no recombination or crossing-over between a locus and the centromere, during anaphase of meiosis I, occurs the separation of the alleles. One of the alleles migrate to one pole and the other migrates to the other pole .
  • But if it occurs crossing-over, the allele separation occurs in the anaphase of meiosis II, when chromatids separate.
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