A somatic cell from a garden pea plant normally contains 14 chromosomes. How many sister chromatids would that cell contain during G1 of the cell cycle?
Understand the Problem
The question is asking how many sister chromatids are present in a somatic cell during the G1 phase of the cell cycle. During G1, the chromosomes have not yet replicated, so each chromosome consists of a single chromatid. Therefore, the number of sister chromatids is equal to the number of chromosomes.
Answer
0 sister chromatids
During the G1 phase of the cell cycle, a somatic cell from a garden pea contains 0 sister chromatids.
Answer for screen readers
During the G1 phase of the cell cycle, a somatic cell from a garden pea contains 0 sister chromatids.
More Information
During the G1 phase of the cell cycle, chromosomes consist of a single chromatid, so there are no sister chromatids at this stage.
Tips
A common mistake is to assume that sister chromatids exist during G1. They only form after DNA replication, which occurs during the S phase.
Sources
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