Categoría: Cell Cycle and Mitosis
Which of the following best describes how the amount of DNA in the cell changes during M phase?
The amount of DNA is halved as the cell divides into two daughter cells Explanation Actually, the amount of DNA in a cell does not change during the M phase (mitosis). Prior…
Which of the following presents a correct interpretation of the changes in chromosome number depicted in Figure 1?
Chromosomes enter metaphase containing two chromatids attached by a centromere. During anaphase, the chromatids are separated, each becoming a chromosome. Cytokinesis distributes the chromosome into two separate cells. Explanation: Figure 1 depicts…
Which of the following patterns is shown by the data?
In mutant 3 cells, more time is spent in prophase/prometaphase than in the later stages of mitosis Explanation The given data indicates that there is a difference in the duration of prophase/prometaphase…
A centromere is a region in which
chromatids are attached to one another
What is a chromatid?
A replicated chromosome A chromatid is a structure that forms part of a chromosome during cell division. Specifically, it is one of two identical copies of DNA that are produced by replication…
The longest part of the cell cycle is:
Interphase That’s correct! Interphase is the longest part of the cell cycle, and it is composed of three stages: G1 (gap 1), S (synthesis), and G2 (gap 2). During interphase, the cell…
Which of the following statements about genes is incorrect?
Under normal circumstances, each chromosome contains precisely one gene
What is the expected percent change in the DNA content of a typical eukaryotic cell as it progresses through the cell cycle from he start of the G1 phase to the G2 phase?
+100% Explanation: The expected percent change in the DNA content of a typical eukaryotic cell as it progresses through the cell cycle from the start of the G1 phase to the G2…