Haldane's law
noun
Hal·dane's law
variants or Haldane's rule
ˈhȯlˌdānz-
: a principle in genetics: when in an interspecific cross one sex is absent, rare, or sterile in the offspring, that sex is heterogametic
Word History
Etymology
after John B. S. Haldane, born 1892 Scottish geneticist