Week 2 (Meiosis)

Question 1

What happens in Prophase 1 (MEIOSIS)?

Answer 1

Specialised (germ cell) diploid chromosomes. Identical line side by side. Recombination(crossing)- new combination of genes

Question 2

What happens in Metaphase 1 (MEIOSIS)?

Answer 2

Fibrous spindles start to form
Chromosomes arrange in pairs

Question 3

What happens in Anaphase 1 (MEIOSIS)?

Answer 3

Pairs separate into chromatids, migrate along spindle fibers towards the end of cell

Question 4

What happens in Telophase 1 (MEIOSIS)?

Answer 4

First meiotic division, cytoplasm starts to divide, nuclear membrane doesn’t reform.
Now have two daughter cells 2 cells with 4 chromatids

Question 5

What happens in Prophase 2 (MEIOSIS)?

Answer 5

Transitionary phase, no replication as need haploid number of chromosomes.

Question 6

What happens in Metaphase 2 (MEIOSIS)?

Answer 6

Chromosomes line up in the middle, attach to each end of spindle apparatus.

Question 7

What happens in Anaphase 2 (MEIOSIS)?

Answer 7

Spindle fibers constrict, pulling chromatids apart from centromere, moves to opposite ends.

Question 8

What happens in Interphase 2 (MEIOSIS)?

Answer 8

Cytoplasm divides and nuclear membrane reforms.
4 cells made with 2 chromatids.