Chromosome replication in a somatic cell takes place during

Question

BlackTom AI · Accepted Answer

The question asks about when chromosome replication in a somatic cell occurs, so we need to consider the stages of the cell cycle and what happens in each.
Option 1: metaphase. Metaphase is part of mitosis, when chromosomes align at the cell's equator before separation. No DNA replication happens here; replication occurs earlier in the cycle, so this choice is incorrect.
Option 2: anaphase. Anaphase is also a mitotic stage, where sister chromatids are pulled apart toward opposite poles. Since replication has already occurred before mitosis begins, this timing is not when replication happens, making this option incorrect.
Option 3: late prophase. Prophase is the early stage of mitosis when chromosomes condense and the nuclear envelope breaks down. While this is associated with chromosome preparation for segregation, replication itself does not occur here; replication must have preceded mitosis, so this is incorrect.
Option 4: interphase. Interphase encompasses G1, S, and G2 phases, with the S (synthesis) phase specifically dedicated to DNA replication. This is the correct context for replication of chromosomes in a somatic cell, as the cell duplicates its DNA before entering mitosis.
In summary, replication of chromosomal DNA in somatic (non-germline) cells is tightly linked to the S phase within interphase, whereas the subsequent mitotic stages (prophase, metaphase, anaphase) involve chromosome condensation, alignment, and segregation rather than replication.

BIOL 1009 (001-006/050-055) Midterm Exam II

Chromosome replication in a somatic cell takes place during

View Explanation

Log in for full answers

Similar Questions

Question at position 91 In eukaryotes the replication of chromosomal DNA occurs during:G2 phaseanaphaseG1 phaseprophaseS phase

If A, B, and C represent G1, S, and G2, respectively, then which phase of the cell cycle would you predict to last the longest in duration? Use the data shown in the left panel (Cells without treatment graph) to answer this question.

Use the figure to answer the question below. In the figure, why does the amount of DNA in nucleus decrease from IV to V?

After S phase of interphase, each chromosome contains two sister chromatids.

During what portion of the cell cycle does interphase occur?

Question at position 36 DNA is replicated during the __________ subphase of interphase of the cell cycle.G1G2SM

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler