A double-stranded chromosome consists of two genetically identical sister chromatids.What important biological event produced the sister chromatids?
A)Crossing over
B)Genetic mutation
C)Mitosis
D) DNA replication
E)Reduction division

Question

Quizplus · Accepted Answer

DNA replication is the process by which a cell makes an exact copy of its DNA, resulting in two identical sets of chromosomes. During this process, each chromosome is replicated to form two identical sister chromatids, which are held together by a centromere. Therefore, DNA replication is the important biological event that produces sister chromatids.

A Double-Stranded Chromosome Consists of Two Genetically Identical Sister Chromatids