Question

what are paired up copies of chromatin called? homologous chromosomes chromosomes daughter chromosomes sister chromatids

Explanation:

To answer this, we recall the definitions:

• Homologous chromosomes are pairs of chromosomes (one from each parent) with similar genes, not paired chromatins.
• Chromosomes are condensed chromatin, but not paired copies of chromatin.
• Daughter chromosomes are the result of separation during cell division, not paired copies.
• Sister chromatids are identical copies of a chromatid formed during DNA replication, paired together (joined at the centromere) before cell division. So the correct option is the one related to paired copies of chromatin from replication.

Answer:

D. Sister chromatids