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.

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    4 THE THEORY OF THE GENE be two kinds of offspring, tall and short in equal nmnbers (Fig. 2). The results confirm the expectation. The same relation shown by the tall and the short peas can be illustrated by the inheritance of eye color in man. Blue eyes mated to blue, give only blues; brown eyes ЫЫ by Ы brbl Fig. 3. Inheritance of brown eyes (brbr) versus blue (blbl) eyes in man. bred to brown give only brown, provided the browns have had only a brown ancestry. If a blue mates with a pure brown, the children are brown (Fig. 3). If two indi¬ viduals that have arisen from such parentage marry, their children will be brown- and blue-eyed in the ratio of 3 to 1. ЬрЬ-Р