This term refers to the sex of a species in which the sex chromosomes are identical. For example, in humans (and most other mammals), the female is the homogametic sex - females have two identical homologous chromosomes (XX), whereas males, the heterogametic sex, have two homologous chromosomes of different sizes with different genes (XY) .
- ↑ Waters P.D. (2007) 'Mammalian sex--Origin and evolution of the Y chromosome and SRY' Seminars in Cell &amp;amp;amp;amp; Developmental Biology 18(3):389-400 Available at: http://www.ncbi.nlm.nih.gov/pubmed/17400006 (Accessed 23/10/2012)
- ↑ Tower J. (2009) 'The genetics of gender and life span' Journal of Biology 8(4): 38 Available at: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2688912/ (Accessed 23/10/2012)