Heterogametic sex

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Heterogametic sex refers to the sex of a species in which the sex chromosomes are not the same. For example, in humans, males, with an X and a Y sex chromosome, would be referred to as the heterogametic sex, and females having two X sex chromosomes would be referred to as the homogametic sex.^[1]

However, in birds, and some reptiles, males have two Z sex chromosomes and so are the homogametic sex, while females, with one Z and one W chromosome, are the heterogametic sex. Among the insects, Lepidopterans (butterflies and moths) have heterogametic females, but in Drosophila, males are the heterogametic sex.^[2]

[edit] See also

[edit] References

^ King R.C. Stansfield W.D. & Mulligan P.K. 2006. A dictionary of genetics, 7th ed. Oxford. p204
^ James Franklin Crow, William F. Dove (eds), 2000. Perspectives on genetics: anecdotal, historical, and critical commentaries, 1987–1998. The University of Wisconsin Press, Madison

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[0] King R.C. Stansfield W.D. & Mulligan P.K. 2006. A dictionary of genetics, 7th ed. Oxford. p204

[1] James Franklin Crow, William F. Dove (eds), 2000. Perspectives on genetics: anecdotal, historical, and critical commentaries, 1987–1998. The University of Wisconsin Press, Madison

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Heterogametic sex

[edit] See also

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