Meiosis

Question 1

Prophase 1

Answer 1

Homologous chromosomes pair up. Synaptonemal complex forms between the pairs.
Form bivalents and crossing over occurs.

Question 2

Prometaphase 1

Answer 2

Spindle fiber microtubules attach to the kinetichore proteins.

Question 3

Metaphase 1

Answer 3

Homologous chromosomes aligned in middle along the metaphase plate.
Alignment/orientation of chromosomes is random
Each pair for sister chromatids is attached to one pole

Question 4

Anaphase 1

Answer 4

Microtubules pull the chromosomes apart and sister chromatids remain tightly bound together at centromere

Question 5

Telophase 1 and Cytokinesis

Answer 5

The separated chromosomes arrive at opposite poles
Nuclear envelopes form around the separated sets of chromatids

Question 6

Prophase 2

Answer 6

Chromosomes condensed, nuclear envelope begins to dissociate into vesicles.
New spindles begin to form

Question 7

Prometaphase 2

Answer 7

Nuclear envelopes completely dissociated.
Spindle fully formed

Question 8

Metaphase 2

Answer 8

Sister chromatids aligned down middle of cell

Question 9

Anaphase 2

Answer 9

Sister chromatids pulled apart to opposite ends of the cell

Question 10

Telophase 2 and Cytokinesis

Answer 10

Chromosomes arrive at opposite poles and begin to decondense
Nuclear envelopes form around chromosomes
4 unique haploid cells formed