Question

Refer to the given figure and select the correct statement.

• A. In stage B homologous chromosomes are inter connected and chromosomes occur in pairs
• B. Stage A is divisible into five substages
• C. In stage D, chromosomes are not enclosed by a nuclear envelope
• D. In stage C centromeres divide and chromosomes are single stranded

Answer 1

Answer: (D)

In the given figure $A,B,C$ and $D$ represent prophase $II$, metaphase$II$, anaphase $II$ and telophase $II$ respectively. Prophase $II$ is not divisible into substages rather prophase $I$ is divisible into five substages. Chromosomes are free in metaphase $II$ while in metaphase $I$ homologous chromosomes are interconnected and chromosomes occur in pairs i.e., bivalents. In telophase chromosomes get enclosed by a nuclear envelope.