Polytene chromosome becomes giant due to

Polytene chromosomes are formed due to

Polytene chromosomes are formed due to

Assertion- The bands of polytene chromosomes become enlarge at certain regions to form puffs or balbiani rings. Reason- These enlarged bands are active genes and represent the site of RNA synthesis.

Polytene Chromosomes are formed by

Polytene chromosome occur in cells of salivary glands of

Polytene chromosome occur in cells of salivary glands of

Polytene chromosomes were discovered in

Polytene chromosomes were discovered in

The chromosomes become invisible in