Question

Which among the following is/ are true regarding a chromosome and a chromatid?

• A. The DNA/ribosome complex is called chromatid
• B. The protein/DNA complex is called chromatid
• C. Two chromatids are joined by the centromere to form a chromosome
• D. Two nucleosomes are joined by the centromere to form a chromosome

Answer 1

Answer: (B), (C)

The correct options are
B

The protein/DNA complex is called chromatid

C

Two chromatids are joined by the centromere to form a chromosome

DNA + histone = chromatin. The DNA double helix in the cell nucleus is packaged by special proteins called histones. The formed protein/DNA complex is called chromatin.

The chromatids are made of chromatin. The chromatin is copied, and spiral up to form the chromatids. The 2 copies of each chromatid are joined together by a centromere to form a chromosome.