NTA Abhyas NEET2020BotanyCell - The Unit of LifePractice
Select incorrect pairing.
Options
- AHeterosomes — Sex chromosomes
- BLampbrush chromosomes — Diplotene bivalents
- CPolytene chromosomes — Oocytes of amphibians
- DHeterochromatin - Darkly stained region of chromosome
Correct answer
C. Polytene chromosomes — Oocytes of amphibians
Step-by-step solution
Polytene chromosomes are oversized chromosomes that are developed from standard chromosomes. Specialized cells undergo repeated rounds of DNA replication without cell division (endomitosis), to increase cell volume, forming a giant polytene chromosome. They are present in the salivary glands of dipteran flies like Drosophila. Lampbrush chromosomes are a special form of chromosomes that are found in the growing oocytes (immature eggs) of most animals, except mammals. Lampbrush chromosomes are present in the amphibia