If a diploid cell contains six chromosomes (i.e., three per set), how many possible random arrangements of homologous could occur during metaphase of meiosis I? a. 24 b. 8 c. 6 d. 23

Which stage of meiosis I is characterized by the formation of two haploid nuclei?   A. Prophase I   B. Telophase I   C. Anaphase I   D. Metaphase I

Gametes contain one of each kind of chromosome because   Select one: A.  The homologous chromosomes separate during meiosis. B.  Crossing-over occurs during prophase I. C.  Only one replication of DNA occurs during meiosis. D.  The chromatids separate during meiosis.

6.) A form of “homologous recombination" can also occur in somatic cells. a. When might this happen? b. Describe two main differences between the recombination that occurs in meiosis and that which happens in somatic cells. (2-3 detailed sentences.)

What is the designation for a gamete with one copy of each homologous chromosome? Select one: a. 3n b. 46 chromosomes c. n d. 2n

What is necessary for a chromosome bridge to occur?     a.    centromeres are necessary      b.    chromosome bridges only apply to meiosis      c.    centromeres and fusion      d.    fusion is necessary      e.    applies only to mitosis and involves fusion and centromeres

2.4

An individual can have an abnormal number of chromosomes as a result of nondisjunction. Identify the following example of nondisjunction that results in an abnormal number of chromosomes. A. Sister chromatids do not separate in meiosis II.   B. Homologous chromosomes move apart appropriately during meiosis I.   C. Mitosis occurs normally during embryonic development.   D. Two normal gametes fuse during fertilization.

If sisiter chromatids of one daughter cell from meiosis l failed to separate during meiosis ll, what would the resulting gametes look like? a. 2 gametes will have 2 of the effected chromosomes, and 2 gametes will have 0 of the effected chromosomes. b. non of the gametes will have any of the effected chromosome. c. 2 gametes will be normal, 1 garmete will have 2 of the effected chromosoms, and 1 gamete will have 0 of the effected chromosome. d. 2 gametes will be normal, and 2 gametes will have 2 of the effected chromosome. e. 2 gametes will be normal, and 2 gametes will have 0 of the effected chormosome