Question

At anaphase II of meiosis, each chromosome contains
A. 4 DNA
B. 3 DNA
C. 2 DNA
D. 1 DNA

Answer 1

Hint:- Anaphase II is the third stage after prophase II in meiosis II, which highlights the separation of each chromosome's sister chromatids into the opposite ends of the cell.

Complete step-by-step solution:-
The third stage in Meiosis II is Anaphase II. It is the process after metaphase II, which is the process in which the chromosomes are bound to the kinetochores in the equatorial plane and spindle fibers. Anaphase II is the stage where each chromosome's sister chromatids split and begin to migrate towards the cell's opposite ends. The separation and the motion are due to the shortening of the microtubules of the kinetochore. Telophase II was followed by Anaphase II.
Each chromosome contains 1 DNA in anaphase II meiosis. The remaining centromeric cohesin is cleaved at anaphase II, allowing segregation of the sister chromatids. By convention, the sister chromatids are now named as sister chromosomes as they pass towards opposite poles.
So, option D is the correct answer.

Additional information:
Meiosis, as it produces gametes, is a division of reproductive cells. After meiosis, the resulting cells produce half of the chromosome number in the parent cell. This is because two meiotic divisions, called the first meiotic division (meiosis I) and the second meiotic division (meiosis II), are encountered by the parent cell. There are four main stages in each of them. Prophase, metaphase, anaphase, and telophase are these.

Note:- Meiotic anaphase II, in mitosis, is similar to anaphase. The division of sister chromatids into the opposite poles of the cell requires both mitotic and meiotic anaphase II.