which diagram best represents the changes that happen to a cells chromosomes during the cell cycle? choose 1…
which diagram best represents the changes that happen to a cells chromosomes during the cell cycle? choose 1 answer:
Answer
Brief Explanations:
During the cell - cycle, DNA replication occurs in the S - phase, which results in the formation of sister chromatids (chromosomes appear as X - shaped). Then, during mitosis (or meiosis), the sister chromatids separate. In option A, the initial chromosomes replicate to form X - shaped chromosomes (sister chromatids) and then separate into individual chromosomes in the daughter cells, which is consistent with the changes in chromosomes during the cell cycle. Option B shows an incorrect reduction in the amount of genetic material. Option C shows an incorrect separation where the sister chromatids do not separate properly to form individual chromosomes in the daughter cells.
Answer:
A.