AP BIOLOGY

CELL DIVISION

CELL DIVISION AND CANCEROUS CELLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Homologous chromosomes separate during,
A
anaphase 1 of meiosis
B
anaphase 2 of meiosis
C
anaphase of mitosis
D
prophase
Explanation: 

Detailed explanation-1: -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-2: -In anaphase I, the homologues are pulled apart and move apart to opposite ends of the cell. The sister chromatids of each chromosome, however, remain attached to one another and don’t come apart. Finally, in telophase I, the chromosomes arrive at opposite poles of the cell.

Detailed explanation-3: -The separation of homologous chromosomes during anaphase I is called disjunction. Disjunction forms an integral part of meiosis I which occurs during anaphase. In meiosis, disjunction happens when homologous chromosomes move apart toward the opposite poles of the cell in anaphase I.

Detailed explanation-4: -During anaphase I, the homologous chromosomes are pulled toward opposite poles of the cell. During anaphase I, the homologous chromosomes are pulled toward opposite poles of the cell.

There is 1 question to complete.