The theory of the gene / by Thomas Hunt Morgan.

  • Thomas Hunt Morgan
Date:
1926
Catalogue details

Licence: Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)

Credit: The theory of the gene / by Thomas Hunt Morgan. Source: Wellcome Collection.

    43/392 (page 19)
    PRINCIPLES OF GENETICS 19 duced. The grandparental types constitute 60 per cent and the crossovers 40 per cent of this second generation. A study of crossing-over has shown that all possible percentages of crossing-over occur, up to nearly 50 per cent. If exactly 50 per cent of crossing-over took place, Л -A. 60 ajo 40 <^0 Fig. 14. The inheritance of two sex-linked characters, white eyes and forked bristleSj and red eyes and normal bristles.