Variations Produced by Meiosis

By: Shelby Graff

Independent Assortment

The random assortment of homologous chromosomes that occurs during meiosis.


Picture: http://geneticssuite.net/node/21

Crossing Over

The exchange of genetic material that occurs between homologous chromosomes during the beginning of meiosis.


Picture: http://uoitbio2013.wordpress.com/mitosis-vs-meiosis/meiosis/

Fertilization

Mutations

A change in the order of nitrogen bases in a cell’s DNA that results in different genetic sequences.


Picture: http://mumtazticloft.com/PigeonGenetics3.asp

Nondisjunction

An alteration in which homologous chromosomes fail to separate normally during meiosis


Picture: http://www.biology.iupui.edu/biocourses/N100/2k2humancsomaldisorders.html