[lecture 9] meiosis and mitosis

Question 1

how do prokaryotes divide

Answer 1

binary fission (replicate DNA)

Question 2

how do eukaryotes divide

Answer 2

divide nucleus first then divide by meiosis or mitosis

Question 3

what are somatic cells

Answer 3

not involved in production of gametes
(mitosis occurs in somatic cells)

Question 4

phases of cell cycle (5)

Answer 4

1. G1
2. S
3. G2
4. mitosis
5. cytokinesis

Question 5

what is S phase

Answer 5

replication of DNA and duplication of chromosomes (packaging of DNA into chromatin

Question 6

what is M phase

Answer 6

nuclear division (mitosis) and cell division (cytokinesis)

Question 7

what is gap phase

Answer 7

G1:
G2:
G0:

Question 8

the 5 mitotic stages

Answer 8

prophase
prometaphase
metaphase
anaphase
telophase

Question 9

what is most important about meiosis

Answer 9

homologous recombination