Puffs in the polytene chromosomes of Drosophila melanogaster salivary glands rep resent

Question

Puffs in the polytene chromosomes of Drosophila melanogaster salivary glands rep resent (A) transcriptionally active genes (B) transcriptionally inactive genes (C) heterochromatin (D) housekeeping genes

Tardigrade Admin · Accepted Answer

Chromosome puff is a localised separation of polytene chromosomes (e.g. chromosomes of Drosophila melanogaster) that represent a site of active RNA synthesis, i.e. transcription which, when very large is known as Balbiani ring.

Q. Puffs in the polytene chromosomes of Drosophila melanogaster salivary glands rep resent

transcriptionally active genes

transcriptionally inactive genes

heterochromatin

housekeeping genes

Chromosome puff is a localised separation of polytene chromosomes (e.g. chromosomes of Drosophila melanogaster) that represent a site of active RNA synthesis, i.e. transcription which, when very large is known as Balbiani ring.