meiotic cell divion - 396 - 397

Question 1

prophase I

Answer 1

Chromosomes condense. Crossing over of homologous chromosomes occurs in late prophase.

Question 2

metaphase I

Answer 2

Members of a chromosomes pair align
chromatids become apparent
nuclear membrane breaks down

Question 3

anaphase I

Answer 3

The spindle draws members of each chromosome pair to opposite poles of the cell, and the cell membrane begins to pinch in

Question 4

telophase I and cytokensis

Answer 4

the cytoplasm divides and nucleus membranes form. Two haploid daughter nuclei are created, but each chromosome is still in the replicated state

Question 5

prophase II

Answer 5

The nuclear envelope breaks down and the meiotic spindle is recreated

Question 6

metaphase II

Answer 6

Chromosomes at each end of the cell move to the equator of the cell

Question 7

anaphase II

Answer 7

the centromere split, separating the sister chromatids and the single strands chromosomes move to opposite poles of the cell

Question 8

telophase II and cytokinesis

Answer 8

cytoplasm divides and nucleus membranes reform, four haploid daughter cells are created.

Question 9

crossing over

Answer 9

chromatids of homologous chromosomes may exchange portions of their genetic information which is called crossing over.. a natural genetic process

Question 10

recombination

Answer 10

the significance of crossing over is that it produces chromosomes with new combination of genetic information