Chapter 6

List the ways in which mitosis and meiosis differ.

What property of cancer cells do chemotherapeutic agents attempt to exploit?

A cell that begins mitosis with 46 chromosomes produces daughter cells with __________ . A. 13 chromosomes; B. 23 chromosomes; C. 26 chromosomes; D. 46 chromosomes

The centromere is a region at which ______________. A. sister chromatids are attached to each other; B. metaphase chromosomes align; \(\mathrm{C}\). the tips of chromosomes are found; D. the nucleus is located

Mitosis __________. A. occurs in cells that give rise to gametes; B. produces haploid cells from diploid cells; C. produces daughter cells that are exact genetic copies of the parent cell; D. consists of two separate divisions, mitosis I and mitosis II

At metaphase of mitosis, ___________. A. the chromosomes are condensed and found at the poles; B. the chromosomes are composed of one sister chromatid; C. cytokinesis begins; D. the chromosomes are composed of two sister chromatids and are lined up along the equator of the cell

Sister chromatids __________. A. are two different chromosomes attached to each other; B. are exact copies of one chromosome that are attached to each other; \(\mathrm{C}\). arise from the centrioles; D. are broken down by mitosis; E. are chromosomes that carry different genes

DNA polymerase __________. A. attaches sister chromatids at the centromere; B. synthesizes daughter DNA molecules from fats and phospholipids; C. is the enzyme that facilitates DNA synthesis; D. causes cancer cells to stop dividing

After telophase I of meiosis, each daughter cell is __________. A. diploid, and the chromosomes are composed of one doublestranded DNA molecule; B. diploid, and the chromosomes are composed of two sister chromatids; C. haploid, and the chromosomes are composed of one double- stranded DNA molecule; D. haploid, and the chromosomes are composed of two sister chromatids

List two things that happen during meiosis that increase genetic diversity.

Define the terms proto-oncogene and oncogene.

In what ways is the cell cycle similar in plant and animal cells, and in what ways does it differ?