Caterpillar genders

Kenelm Philip fnkwp at
Mon Jan 11 01:17:26 EST 1999

	The sex of butterflies is normally determined at conception: a cell
with two X chromosomes is male, one with one X chromosome is female. How-
ever, during subsequent cell division an X chromosome can sometimes get
lost--resulting in gynandromorphs: butterflies which are part male and part

	In most cases, it's safe to say that an egg, a caterpillar, or a
pupa is male or female--and will yield an adult of the same sex. (And I
doubt there is much to be gained by using the PC term 'gender' in this

							Ken Philip
fnkwp at

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