Nondisjunction is when chromosomes do not separate correctly in anaphase. Nondisjunction in meiosis II produces A. two cells with too many chromosomes and two cells with too few chromosomes. B. two cells with the correct number of chromosomes and two cells with too many chromosomes. C. two cells with too many chromosomes; one with too many chromosomes and one with the correct number of chromosomes. D. two cells with the correct numbers of chromosomes; one cell with too many chromosomes and one cell with too few chromosomes.

Which of the following mechanisms contributes to genetic variation through sexual reproduction via the random orientation of pairs of homologous chromosomes at metaphase of meiosis I?   A. crossing over   B. random fertilization   C. independent assortment of chromosomes   D. cytokinesis

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

Crossovers occur between  a. non-sister chromatids during meiosis I  b. non-sister chromatids during meiosis II c. sister chromatids during meiosis I  d. sister chromatids during meiosis II

The major way that meiosis II differs from mitosis is that O A. in meiosis II, the homologous sister chromatids align at the metaphase plate as a tetrad. in meiosis II, the cells are haploid. В. in meiosis II, a pair of sister chromatids move to the pole. in meiosis II, the homologues separate. D.