Zusammenfassung der Ressource
Meiosis Diagram
- gametes
- produce sex cells- egg or sperm
- Chromosome number
- diploid
- cells that contain both sets of homologous chromosomes- 2N
- haploid
- gametes with a single set of chromosomes- N
- Meiosis 1
- Interphase 1
- DNA replication
- Prophase 1
- each chromosome pairs with it's correspondent to form a tetrad that consists of 4 chromatids
- crossing over
- when the homologous chromosomes form tetrads they exchange portions of their chromatids which produce new combinations of alleles
- Metaphase 1
- Anaphase 1
- Telophase 1 & Cytokinesis
- cell separates into 2 haploid cells that are different from each other
- Meiosis II
- the 2 haploid cells produced by meiosis 1 enter meiosis II
- unlike meiosis, neither cell goes through chromosome replication
- each of the cell's chromosomes has 2 chromatids
- Prophase II
- Metaphase II
- Anaphase II
- Telophase II & Cytokinesis
- results in 4 haploid daughter cells- N
- each containing unreplicated chromosomes
- female
- results in 1 egg
- other 3 (polar bodies) aren't involved in reproduction
- male
- results in 4 equal-sized gametes called sperm