Question

extension questions model 3 - timing of dna replication
if the chromatin were condensed, replicated chromosomes would be visible. (end of s)
if the chromatin were condensed, homologous chromosomes would be visible. (end of g1)
chromosomes are condensed. matching sister chromatids are connected by a centromere. (beginning of m)

1. according to model 3, what term refers to loose dna inside of a nucleus?
2. during what part of the cell cycle is the dna replicated?

Explanation:

The question is about a biological concept related to the form of DNA within a nucleus and the cell - cycle stage of DNA replication. Chromatin is the term for loose DNA in the nucleus. DNA replication occurs during the S - phase of the cell cycle.

Answer:

1. Chromatin
2. S - phase