ch 12 & 13 biology

If the DNA content of a diploid cell in the G1 phase of the cell cycle is x, then the DNA content of the same cell at metaphase of meiosis I will be

2x

Cell A has half as much DNA as cells B, C, and D in a mitotically active tissue. Cell A is most likely in

G1

The two homologs of a pair move toward opposite poles of dividing cell during

Meiosis I

Through a microscope, you can see a cell plate beginning to develop across the middle of a cell and nuclei forming on either side of the cell plate. This cell is most likely:

a plant cell in the process of cytokinesis

In the cells of some organisms, mitosis occurs without cytokinesis. This will result in

cells with more than one nucleus.

The drug cytochalasin B blocks the function of actin. Which of the following aspects of the cell cycle would be most disrupted by cytochalasin B?

cleavage furrow formation and cytokinesis

One difference between cancer cells and normal cells is that cancer cells

continue to divide even when they are tightly packed together.

Vinblastine is a standard chemotherapeutic drug used to treat cancer. Because it interferes with the assembly of microtubules, its effectiveness must be related to

disruption of mitotic spindle formation.

Which of the following occurs during S phase?

replication of the DNA

Meiosis 2 is similar to mitosis in that

sister chromatids separate during anaphase

A human cell containing 22 autosomes and a Y chromosome is

sperm

The decline of MPF activity at the end of mitosis is due to

the degradation of cyclin.

If we continued to follow the cell lineage from question 4, then the DNA content of a single cell at metaphase of meiosis II would be

x