Meiosis Flashcards
1
Q
What occurs during prophase I? (3)
A
- chromosomes condense
- homologous chromosomes synapse and crossing over occurs
- nuclear membrane begins to disappear
2
Q
What occurs during prometaphase I, or late prophase I? (3)
A
- homologous chromosomes attach to spindle fibres
- chromosomes condense even more
- nuclear membrane completely disappears
3
Q
What occurs Metaphase I?
A
- Homologous chromosomes line up on the equator independently from each other
4
Q
What occurs during anaphase I?
A
- microtubules contract, pulling homologous pairs to different ends of the cell
5
Q
What occurs during telophase/ cytokinesis I? (3)
A
- chromosomes decondense
- nuclear membrane reforms
- cytoplasm divides by cleavage furrow, producing two haploid daughter cells
6
Q
What occurs during prophase II? (3)
A
- chromosomes condense
- spindle fibres form
- nuclear membrane begins to disappear
7
Q
What occurs during prometaphase II, or late prophase II? (2)
A
- nuclear membrane has disappeared
- spindle fibres attach to each sister chromatids kinetochore
8
Q
What occurs Metaphase II?
A
- Chromosomes line up on equator/ metaphase plate
9
Q
What occurs during anaphase II?
A
- microtubules contract pulling sister chromatids apart to opposite poles
10
Q
What occurs during telophase/ cytokinesis II? (3)
A
- chromosomes decondense
- nuclear membrane forms
- cleavage furrow forms diving two cells into 4 gametes
