Question

A plant cell of Arabidopsis Thaliana, a model organism, was found to have 13.7picograms of DNA per cell near the beginning of Interphase. How much DNA would one expect to find in the same type of cell during prometaphase?

A) 6.85 pg
B) 54.8 pg
C) 27.4 pg

Answer 1

During prometaphase, an Arabidopsis thaliana plant cell that initially had 13.7 picograms of DNA in interphase would expect to have 27.4 picograms of DNA after the DNA replication during the S phase. The correct answer is option C) 27.4 pg.

Step-by-step explanation:

The question relates to the amount of DNA found in a plant cell of Arabidopsis thaliana during different phases of the cell cycle. In the initial interphase, the cell was found to have 13.7 picograms of DNA. As cells prepare for mitosis, DNA is replicated during the S phase, leading to a doubling of the DNA content in preparation for cell division. By the time the cell reaches prometaphase, the DNA content is expected to have doubled from the initial interphase amount, anticipating cell division.

Therefore, since the cell initially had 13.7 picograms of DNA and the DNA replicates, by prometaphase, the cell should have 13.7 pg × 2 = 27.4 picograms of DNA. The correct answer is option C) 27.4 pg.