Questions: A skin cell in G2 of interphase has as much DNA as it had in G1. twice four times one-fourth exactly half

A skin cell in G2 of interphase has as much DNA as it had in G1. twice four times one-fourth exactly half
Transcript text: * +0 pts /1500 Question 1 of 15 A skin cell in $\mathrm{G}_{2}$ of interphase has $\qquad$ as much DNA as it had in $\mathrm{G}_{1}$. twice four times one-fourth exactly half
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Solution

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The answer is the first one: twice.

Explanation for each option:

  • Twice: Correct. During the G2 phase of interphase, the cell has already completed DNA replication, which occurs during the S phase. Therefore, the amount of DNA in G2 is twice the amount present in G1.
  • Four times: Incorrect. DNA replication results in doubling the DNA content, not quadrupling it.
  • One-fourth: Incorrect. This would imply a reduction in DNA content, which does not occur during interphase.
  • Exactly: Incorrect. This option is ambiguous without further context, but it does not specify the correct relationship between G1 and G2 phases.
  • Half: Incorrect. This would imply that the DNA content is reduced by half, which is not the case during interphase.

Summary: A skin cell in G2 of interphase has twice as much DNA as it had in G1.

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