Question

What are lampbrush chromosomes?

Answer 1

Lampbrush chromosomes:

1. Lampbrush chromosomes are a type of chromosome found in the developing oocytes of most animals, with the exception of mammals.
2. Walther Flemming and Ruckert were the first to describe them in 1882.
3. Lampbrush chromosomes can be found in the nuclei of vertebrates like fish, amphibians, reptiles, and birds' oocytes.
4. The chromomeres unfold, forming large lateral loops.
5. Hence, chromosomes appear like a lamp cleaning brush.
6. Hence, the name lampbrush chromosomes.
7. The lateral loops are active sites of transcription