Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Molecular Basis of Inheritance

Question:

Which among the following statement is not correct about heterochromatin ?

Options:

It is densely packed .

It is transcriptionally active.

It is darkly stained .

None of these .

Correct Answer:

It is transcriptionally active.

Explanation:

The correct answer is Option (2)-It is transcriptionally active.

The statement that is not correct about heterochromatin is: It is transcriptionally active.

Heterochromatin is a tightly packed form of chromatin that appears darkly stained under a microscope. It is generally transcriptionally inactive or transcriptionally repressed, meaning that the genes within heterochromatin are not actively transcribed into RNA. In contrast, euchromatin, which is a less condensed and more open form of chromatin, is associated with active transcription of genes. Therefore, the correct statement is that heterochromatin is transcriptionally inactive.