Meiosis Diagram

Meiosis Diagram

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

Resumen del Recurso

	Creado por taylorcb105 hace casi 9 años