Question

Identical copies of chromatin held together by cohesin at the centromere are called _____.

histones.
nucleosomes.
chromatin.
sister chromatids.

Answer 1

Sister chromatids.

Step-by-step explanation:

Sister chromatids are the two identical halves of a chromosome that are held together at centromere with help of cohesin. DNA replication in the S phase of the cell cycle doubles the amount of DNA. The copies of the DNA formed during DNA replication are accommodated in sister chromatids. Hence, two sister chromatids of a chromosome carry the identical DNA helices and associated proteins.