Stages of Meiosis Flashcards
How many cycles of meiosis does a sperm or egg cell go through?
2 cycles
What occurs during prophase 1?
DNA replication begins to occur prior to the start of prophase 1
- tetrads form
-crossing over may occur here
At what stage of meiosis does crossing-over have the possibility to occur?
Prophase 1
What are tetrads?
2 pairs of homologous chromosomes held together by a synaptonemal complex
What occurs during Metaphase 1?
Tetrads line up along the metaphase plate
What happens during Anaphase 1?
Pairs of sister chromatids move to opposite sides of the cell (still joined together)
What happens during Telophase 1?
Pairs of sister chromatids arrive at opposite sides of the cell (both are haploid)
What is the short rest period between cycles of meiosis division called?
Interkinesis
What occurs during Prophase 2 (after interkinesis?
All same steps as prophase 1 EXCEPT DNA replication does not occur
Are Metaphase/Anaphase/and Telophase 2 the same as the first round?
Yes
What is produced at the end of the second round of meiosis/division
4 haploid daughter cells are produced