Meiosis Flashcards
1
Q
Meiosis I
A
- I1 , P1 , M1, A1, T1 , c1
- Meiosis 1 involves TETRADS
2
Q
Tetrad
A
Homologous sister chromatids
3
Q
Synapsis
A
Reduces # of chromosomes (46 chromosomes = 23 tetrads)
4
Q
‘Crossing Over’
A
Recombination (chromatids exchange DNA)
5
Q
P1
A
- Synapsis
- Recombination
6
Q
M1
A
tetrads move to middle of cell
7
Q
A1
A
Tetrads pulled apart into chromatids
8
Q
T1
A
nuclear envelope reforms
9
Q
Cytokinesis 1
A
- Reductive division**
- Daughter cells pull apart
10
Q
Meiosis II
A
IPMAT2
- Involves Chromatids!
11
Q
Cytokinesis II
A
Equatorial Division
12
Q
Meiosis reduces….
A
Diploid (2n) to Haploid (n)
13
Q
3 Unique Meiosis Events
A
- Synapsis/ crossing over
- Metaphase Plate there are Tetrads
- Anaphase 1; Tetrads separate
14
Q
Genetic Variation (x3)
A
- Independent assortment of chromosomes
- Recombination
- Random Fertilization
15
Q
Number of possible combinations
A
more than 8 Million
