Question

Lampbrush chromosome can be studied with the help of

• A. Light microscope
• B. Electron microscope
• C. Scanning electron microscope
• D. High speed electron microscope

Answer 1

The correct option is A Light microscope

Lampbrush chromosomes are a special form of chromosome found in the growing oocytes (immature eggs) of most animals, except mammals. They were first described by Walther Flemming in 1882. Lampbrush chromosomes of tailed and tailless amphibians, birds and insects are best described. 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. Lampbrush chromosomes are clearly visible even in the light microscope.