Question

What does constitutive heterochromatin contain?

1) is the site of microtubule attachment during mitosis (its DNA)
2) is located at the site markedly indented on a chromosome
3) cannot be fixed
4) None of the above

Answer 1

Heterochromatin contains genes that are not expressed, while euchromatin contains genes that are transcribed.4) None of the above

Step-by-step explanation:

Heterochromatin is the tightly packaged region of a chromosome that contains genes that are not expressed. It is found in the regions of the centromere and telomeres. In contrast, euchromatin is the less dense region of a chromosome that contains genes that are transcribed. The DNA in heterochromatin is highly compacted and not accessible for gene expression, while the DNA in euchromatin is less compacted and accessible for gene expression.