Meiosis

Formation of Haploid CellsMeiosis- for of cell division that halves the

number of chromosomes when forming specialized reproductive cells such as gametes or spores.

2 divisions in the nucleus Meiosis IMeiosis II

MeioticProphase I

Metaphase IAnaphase ITelophase IProphase II

Metaphase IIAnaphase IITelophase II

http://www.ri.net/schools/Narragansett/NHS/mywebpage/

Crossing OverThe exchange of

genetic material between homologous chromosomes during meiosis

http://waynesword.palomar.edu/lmexer2a.htm

Independent AssortmentThe random distribution of the pairs of genes

on different chromosomes to the gametes.Humans have 23 chromosomes, so….There is 223 (roughly 8 million) gene

combinations that can be produced.

SpermatogenesisThe process by which sperm are produced in

male animals.Occurs in the testesResults in 4 sperm cells

OogenesisProcess by which gametes are produced in

female animals.Occurs in the ovariesResults in one egg cell, or ovum, and 3 polar

bodies that will die.

Use of cell reproduction in the real worldCloningArtificial insemination

Humanslivestock

KaryotypingStem Cell researchEpigenetic gene marking