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Chapter 13: Problem 2

Chromosomes are duplicated during what portion of the cell cycle? a. \(\mathrm{G}_{1}\) phase b. S phase c. prophase d. prometaphase

Short Answer

Expert verified
Answer: Chromosomes are duplicated during the S phase of the cell cycle.

Step by step solution

01

Identify the four given phases of the cell cycle

The given phases are: a. G1 phase b. S phase c. prophase d. prometaphase These phases are part of the cell cycle, which consists of two main periods: the interphase and the mitotic (M) phase.
02

Recall the events in each phase

Now recall the events that occur in each of these phases: a. G1 phase: a period of cell growth that takes place before DNA replication b. S phase: DNA replication takes place c. prophase: First stage of mitosis, chromatin condenses into visible chromosomes d. prometaphase: Nuclear envelope breaks down, spindle fibers attach to kinetochores
03

Identify the phase in which chromosomes are duplicated

The question is asking in which phase chromosomes are duplicated. Chromosome duplication occurs when DNA is replicated. Therefore, the correct answer is: b. S phase

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Most popular questions from this chapter

Which of the following is the correct order of events in mitosis? a. Sister chromatids line up at the metaphase plate. The kinetochore becomes attached to the mitotic spindle. The nucleus re-forms and the cell divides. The sister chromatids separate. b. The kinetochore becomes attached to the mitotic spindle. The sister chromatids separate. Sister chromatids line up at the metaphase plate. The nucleus re-forms and the cell divides. c. The kinetochore becomes attached to metaphase plate. Sister chromatids line up at the metaphase plate. The kinetochore breaks down and the sister chromatids separate. The nucleus re-forms and the cell divides. d. The kinetochore becomes attached to the mitotic spindle. Sister chromatids line up at the metaphase plate. The kinetochore breaks apart and the sister chromatids separate. The nucleus re-forms and the cell divides.

Separation of the sister chromatids is a characteristic of which stage of mitosis? a. prometaphase b. metaphase c. anaphase d. telophase

Compare and contrast a human somatic cell to a human gamete.

An organism's traits are determined by the specific combination of inherited \(-------\) ' a. cells b. genes c. proteins d. chromatids

At which stage of meiosis are sister chromatids separated from each other? a. prophase I b. prophase II c. anaphase I d. anaphase II
See all solutions

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