Use the following information to answer the questions below.
The lettered circle in Figure 12.1 shows a diploid nucleus with four chromosomes. There are two pairs of homologous chromosomes, one long and the other short. One haploid set is symbolized as black and the other haploid set is gray. The chromosomes in the unlettered circle have not yet replicated. Choose the correct chromosomal conditions for the following stages.

-A cell containing 92 chromatids at metaphase of mitosis would, at its completion, produce two nuclei each containing how many chromosomes?
A)12
B)16
C)23
D)46
E)92

Question

Use the following information to answer the questions below.
The lettered circle in Figure 12.1 shows a diploid nucleus with four chromosomes. There are two pairs of homologous chromosomes, one long and the other short. One haploid set is symbolized as black and the other haploid set is gray. The chromosomes in the unlettered circle have not yet replicated. Choose the correct chromosomal conditions for the following stages.

-A cell containing 92 chromatids at metaphase of mitosis would, at its completion, produce two nuclei each containing how many chromosomes?
A)12 
B)16 
C)23 
D)46 
E)92

Quizplus · Accepted Answer

During metaphase of mitosis, each chromosome has replicated into two chromatids joined at the centromere. Therefore, the total number of chromatids is 2 times the number of chromosomes. In this case, there are 92 chromatids, so the cell has 46 chromosomes. At the completion of mitosis, each of the two resulting nuclei will also have 46 chromosomes. Therefore, the correct answer is D.

Use the Following Information to Answer the Questions Below