phases of meiosis I

Question 1

interphase

Answer 1

chromosomes replicate, so each chromosome consists of a pair of sister chromatids

Question 2

prophase I

Answer 2

homologous chomosomes synapse (come together) to form pairs. crossing over occurs. the nuclear envelope breaks down. the spindle apparatus forms and attaches to the chromosomes.

Question 3

metaphase I

Answer 3

spindle fibers have pulled synapsed pairs of homologous chromosomes to the metaphase plate.

Question 4

anaphase I

Answer 4

homologous chromosomes separate and are pulled toward opposite poles of the cell. sister chromatids remain attached. (the chromosomes are still replicated).

Question 5

telophase I

Answer 5

the chromosomes finish moving to opposite poles

Question 6

cytokinesis

Answer 6

once meiosis I is complete, the cell divides along its midline to form two daughter cells.