Caterpillar genders

Bruce Walsh jbwalsh at
Mon Jan 11 10:19:52 EST 1999

Ken's comments on butterfly males being XX, while females have a single X
is correct in concept, but the correct genetic notation used for species
where the female is heterogametic (two different types of sex chromosomes)
is WW for males and WZ for females.  

For more information, see



Bruce Walsh
Associate Professor
Department of Ecology and Evolutionary Biology
Biosciences West
University of Arizona
Tucson,  AZ  85721  USA

email:   jbwalsh at
Office:  520 621-1915
Fax (Departmental)  520 621 9190

home page:
Quantitative Genetics page:
Arizona Moths page:
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