Question

Mastering biology during which part of meiosis (meiosis i or meiosis ii) do the two alleles of a gene separate? during which phase does the separation occur?

Answer 1

Meiosis occurs in germ cells to produce haploid progeny. Prior to meiosis the genome duplicates so at the start of meiosis you have two copies of each allele. Each chromosome (which is one allele) is paired with its copy. These pairs are referred to as sister chromatids. The sister chromatids are then paired with the other matching chromosome during metaphase. During meiosis I, the alleles (chromosomes are separated into different cells). This separation occurs during anaphase of meiosis I. The sister chromatids (which are copies of one allele) are later separated in meiosis II.