AP BIOLOGY

LABORATORY REVIEW

MITOSIS AND MEIOSIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In what phase of meiosis do homologous chromosomes separate?
A
metaphase I
B
metaphase II
C
anaphase I
D
anaphase II
Explanation: 

Detailed explanation-1: -During anaphase I, the homologous chromosome pairs separate and are pulled to opposite poles of the cell by spindle fibers attached to the centrioles. This first cell division process is completed during telophase I.

Detailed explanation-2: -Anaphase 1 is the third step of meiosis 1, whereas anaphase 2 is the third step of meiosis 2. During anaphase 1, a single pair of the homologous chromosome, which forms a bivalent, is moved towards the opposite poles of the cell with the help of spindle fibres attached to the centromere through kinetochores.

Detailed explanation-3: -Final answer: During Anaphase I of meotic phase homologous chromosomes separate while the sister chromatids remain associated at their centromeres.

Detailed explanation-4: -During anaphase, each pair of chromosomes is separated into two identical, independent chromosomes. The chromosomes are separated by a structure called the mitotic spindle.

There is 1 question to complete.