Question

In salivary gland chromosomes/polytene chromosomes, pairing is?

• A. Absent
• B. Occasional
• C. Formed between non-homologous chromosomes
• D. Formed between homologous chromosomes

Answer 1

The correct option is A Absent

D. Formed between homologous chromosomes

Reasonj: The salivary gland chromosome (also known as polytene chromosomes) are found during the interphase stage of the cell division in the nuclei of the salivary gland cells of the larvae of Drosophila melanogaster or fruit flies.

These chromosomes undergo somatic pairing to form identical chromosomes that are joined along with their length to one another. Somatic pairing is the pairing of homologous chromosomes during mitosis in a somatic cell (body cell other than sex cells). So the correct option is D.