AP BIOLOGY

Detailed explanation-1: -During anaphase I stage of meiosis, the cell starts to lengthen. The two homologs of each chromosome pair separate and move toward opposite poles, drawn by the microtubules of the spindle apparatus. This contrasts with mitosis, where the sister chromatids of each homolog separate and move toward opposite poles.

Detailed explanation-2: -The pairing of homologous chromosomes takes place in prophase I of meiosis which is separated in anaphase I leading to reduction of chromosome number to half. During anaphase II the sepsration of sister chromatids takes place.

Detailed explanation-3: -Complete answer: During anaphase 1, two chromatids move as a unit from each of the tetrads to the pole of the spindle. The other two homologous chromatids move to the other pole. The homologous chromosomes are separated now. So in the prophase, we will see the half separated chromosome at the pole.

Detailed explanation-4: -Chromosome segregation occurs at two separate stages during meiosis called anaphase I and anaphase II (see meiosis diagram). In a diploid cell there are two sets of homologous chromosomes of different parental origin (e.g. a paternal and a maternal set).

Detailed explanation-5: -To achieve this, a single round of DNA replication is followed by two consecutive rounds of nuclear division called meiosis I and meiosis II. During meiosis I homologous chromosomes segregate. Meiosis II resembles mitosis in that sister chromatids segregate from each other.