Meiosis Flashcards
1
Q
What is meiosis
A
Cell division for sexual reproduction
2
Q
What happens in interphase for meiosis 1
A
- cells content duplicates
3
Q
What happens in early prophase for meiosis 1
A
- dna condenses into chromosomes
- homologous chromosomes pair up
4
Q
What happens in late prophase for meiosis 1
A
- random homologous chromosomes will cross over and physically exchange genetic material
- spindle fibres appear
- nuclear membrane disappears
5
Q
What happens in metaphase 1 for meiosis 1
A
- homologous chromosomes randomaly align across the equator
6
Q
What happens in anaphase 1 for meiosis 1
A
Mictotubles connect to the muffler of the chromosomes and pull chromosomes to opposite ends (random segregation)
7
Q
What happens in telophase 1 for meiosis 1
A
- cytoplasm pinches to seperate the cells
- spindle fibres disappear
- nucleus reforms
8
Q
What happens in cytokinesis for meiosis 2
A
- cell elongates and splits into 2 diverse cells
9
Q
What happens in prophase 2 for meiosis 2
A
- nucleus disappears
- spindle fibres forming
- no crossing over
10
Q
What happens in metaphase 2 for meiosis 2
A
- chromosomes align across the middle
- spindle arms forms
11
Q
What happens in anaphase 2 for meiosis 2
A
- spindle fibres connect to chromatids and pull to opposite ends of
12
Q
What happens in telophase 2 for meiosis 2
A
- nucleus reappears
- spindle fibres disappear
- cytoplasm pinches in middle
13
Q
What happens in cytokenisis for meiosis 2
A
- cell elongates and splits to create 4 sex cells
14
Q
What is the summarise process of meiosis 1?
A
- Interphase
- Early prophase 1
- Late prophase 1
4, metaphase 1 - Anaphase 1
- Telophase 1
15
Q
What is the summarise process of meiosis 2?
A
- Cytokenisi
- Prophase 2
- Metaphase 2
- Anaphase 2
- Telophase 2
- Cytokenisis
