exam 2 Flashcards
(10 cards)
1
Q
cell cycle lasts how long
A
16-24 hours
2
Q
where are the cell cycle checkpoints
A
G1-S, G2-M,
3
Q
most time is spent in which stage
A
interphase
4
Q
where would you add colchicine
A
after G2
5
Q
what are the six stages of prophase I
A
leptotene, zygotene, early pachytene, late pachytene, diplotene, diakinesis
6
Q
laptotene
A
right after interphase
see chromosomes become dense
7
Q
zygotene
A
homologous chromosomes pair together
8
Q
pachytene
A
crossing-over occurs (change in genetics material; exchange between non-sister chromatids); longer chromosome = more crossing over (smaller chromosome such as c21 has less crossing over)
closer to telomere = more crossing over
closer to centromere = less crossing over
9
Q
diplotene
A
information has been exchanged
10
Q
diakinesis
A
separation of sister chromosomes
