The weaker sex is heterogametic: 75 years of Haldane's rule.
Laurie
C C
CC
DCMB/Zoology Department, Duke University, Durham, North Carolina 27708, USA.
D000818:Animals; D005075:Biological Evolution; D005260:Female; D005828:Genetics, Population / Q000266:history*; D006579:Heterozygote; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D006824:Hybridization, Genetic / Q000235:genetics; D008297:Male; D008957:Models, Genetic