Figure 132 of a single pair of homologous chromosomes as the

Figure 13.2 of a single pair of homologous chromosomes as they might appear during various stages of either mitosis or meiosis

53) Which diagram(s) represent anaphase II of meiosis?

A) II only

B) III only

C) IV only

D) V only

E) either II or V

Answer: D

What\'s wrong with E??

Solution

Answer

2 chromatids make one chromosome. A diploid cell has 2 chromosomes, hence 4 chromatids.

In mitosis chromatids separate.

The figure II shows that two chromatids of each chromosome are being pulled apart.

In case of meiosis when a cell enters into prophase-1, cell has 4 chromatids similar to mitosis

But during Meiosis-1, the two chromosomes are being separated (Not chromatids as in Mitosis)

Now each cell is left with two chromatids of a single chromosome

During Meiosis-II, the two chromatids are now separated.

Therefore, the diagram II represents the anaphase of Mitosis

Whereas, diagram V correctly represents the anaphase II of Meiosis.