Mendel's principles of heredity / by W. Bateson.

  • Bateson, William, 1861-1926.
Date:
1913
Catalogue details

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

Credit: Mendel's principles of heredity / by W. Bateson. Source: Wellcome Collection.

    102/469 (page 77)
    IV] Presence and Absence 77 Then in the case where grey x albino gives in 9 grey : 3 black : 4 albino, we simply have to regard B, the black determiner, as common to both parents, and the same numerical result is produced. Such a case may usefully be represented in a tabular form, thus : Parents Grey x Albino Gametic Composition... С GB cgB Fl Grey CcGgBB I ^ I 9 Grey : 3 Black : 4 Albino 12 : 4 3 : I Fig- 15. Distribution of grey, black, and albino individuals in F.¿ from the cross grey, CGB, with albino cgB, showing the meaning of the ratio 9 grey : 3 black : 4 albino.