Cell Cycle, Cell Division, and Inheritance
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Biology Q & A Practice
1 of 5 A-Level exam-style exercises in this topic
2n = 12
6 homologous pairs
Process P
Outcome Q
Figure 1: evidence supplied for the question
A species has 2n = 12. How many chromosomes and chromatids are present in one cell at metaphase I?
Select one option.
A
6 chromosomes, 12 chromatids
B
12 chromosomes, 12 chromatids
C
12 chromosomes, 24 chromatids
D
24 chromosomes, 24 chromatids
E
24 chromosomes, 48 chromatids
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