On Heredity in Mice from the Records of the Late W. F. R. Weldon. On the Inheritance of the Sex-Ratio and of the Size of Litter

摘要: (1) IT has already been indicated in this journal that very comiiplete records of his Oxford experiments on the crossitng Japanese Waltzing and Albino mice were preserved by W. F. R. Weldon. The publication conclusions to be drawn from these data will we hope niot unduly delayed. Meanwhile three papers recently issued Biometrika suggested bearing inheritance fertility sex miiight fitly ineet, as a rounded portion Weldon's investigations, with an early treatmenit. breeding experience covered eight generations. Up second generation hybrids (2H) conduict was hands Mr A. D. Darbishire, have heartily thank him for placing earlier freely at ouir disposal. He also most kindly provided what information possible regard period transition. There is full record, often extending back into several generations all actually bred after Darbishire left. only failure found so far record catalogue certain nunmber 2H litters which not used further Oxford, but colouir specification given Darbishire's memoir Biometrikat. absence prevents material present purpose being forthcoming couild wished+. Still quite sufficient drawing definite comparison results other species.