Mitosis and Meiosis Exam Review

During this phase of mitosis the centromeres break apart as the separated sister chromatids begin to move to opposite poles

• prophase

• metaphase

• anaphase

• telophase

This is the longest part of the cell cycle

• interphase

• prophase

• metaphase

• anaphase

All BUT ONE statement describes an advantage of meiosis.

• Variation is aided by crossing - over which occurs during meiosis

• Meiosis ensures that daugther cells receive one of each type of gene and half the chromosome number

• The mixing of genes independently provides a huge number of genetic combintations creating biodiversity.

• Meiosis occurs often because it allows body tissues in multi cellular organisms to repair themselves.

All of the following are effects of crossing over of homologous chromosomes during prophase I of meiosis with the EXCEPTION of

• increases genetic variety

• increased number of chromosomes in the offspring

• the appearance of new genetically unique offspring

• possible harmful mutations from cross-over errors such as non disjunction

Cell division is represented in Figure 10–1 by the letter

• A.

• B.

• C.

• D.

The structure labeled A in Figure 10–2 is called the

• centromere.

• centriole.

• sister chromatid.

• spindle.

The structures labeled B in Figure 10–2 are called

• centromeres.

• centrioles.

• sister chromatids.

• spindles.

The two main stages of cell division are called

• mitosis and interphase.

• synthesis and cytokinesis.

• the M phase and the S phase.

• mitosis and cytokinesis.

When gametes combine to form a zygote, the chromosomes number of the zygote is now referred to as

• diploid

• haploid

• monoploid

• polyploid

Cancer is a disorder in which some cells have lost the ability to control their

• size.

• spindle fibers.

• cell division

• surface area.