Meiosis + Sexual Life Cycles Flashcards
1
Q
Gamete
A
sex cell, 23
2
Q
Somatic cell
A
Body cell
3
Q
How many chromosomes
A
46
4
Q
Autosomes
A
22 pairs of chromosomes (don’t include sex)
5
Q
Meiosis I overall function
A
Diploid to haploid
6
Q
Interphase (M I)
A
chromosomes replicated
7
Q
Prophase I
A
- Synapsis (homologous chromosomes pair up)
- Crossing over @ chiasmata
8
Q
Tetrad
A
4 sister chromatids
9
Q
Metaphase I
A
Tetrads line up
10
Q
Anaphase I
A
- Pairs of homologus chromosomes separate
-Sister chromatids still attached by centromere
11
Q
Telophase I & Cytokinesis
A
- 2 daughter cells produced (genetically different)
- Haploid set of chromosomes in each cell
12
Q
Meiosis II overall function
A
create gametes
13
Q
Prophase II
A
- no crossing over
- no interphase
- spindle forms
14
Q
Metaphase II
A
Chromosomes line up
15
Q
Telophase II & Cytokinesis
A
- 4 haploid cells (genetically different)
- Nuclei reappear