Question

Lampbrush chromosome contain

• A. One chromatid.
• B. Two chromatids.
• C. Three chromatids.
• D. Several chromatids.

Answer 1

The correct option is B Two chromatids.

Lampbrush chromosomes contains two chromatids. Lampbrush chromosomes are a special form of chromosome found in the growing oocytes (immature eggs) of most animals, except mammals. Chromosomes transform into the lampbrush form during the diplotene stage of meiotic prophase I due to an active transcription of many genes. They are highly extended meiotic half-bivalents, each consisting of 2 sister chromatids.