What change occurs in chromosome structure between G1 and G2 phases of interphas
ID: 151839 • Letter: W
Question
What change occurs in chromosome structure between G1 and G2 phases of interphase?
In G2, they become extremely compacted.
In G2, the physical structure of a chromosome does not include nucleosomes.
Chromosomes in G2 contain two DNA molecules while those in G1 have only one.
Chromosomes in G2 have a centromere, which was not present in G1.
A.In G2, they become extremely compacted.
B.In G2, the physical structure of a chromosome does not include nucleosomes.
C.Chromosomes in G2 contain two DNA molecules while those in G1 have only one.
D.Chromosomes in G2 have a centromere, which was not present in G1.
Explanation / Answer
Answere : The correct option is (C) i.e. chromosomes in G2 contain two DNA molecules while those in G1 have only one. During S phase (after G1 phase), the chromosome DNA replicate and double its amount. After S phase, single DNA molecule get double.
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