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Vries, Hugo de, 1848-1935

"Species and Varieties, Their Origin by Mutation"


For the latter we need only assume the same conditions as mentioned
before, but now for three different qualities. It is easily seen that
the third quality would split each of our four groups into two smaller
ones in the proportion of 3/4 : 1/4.
We would then get eight groups of the following composition:
9/16 X 3/4 = 27/64 or 42.2%
9/16 X 1/4 = 9/64 " 14.1%
3/16 X 3/4 = 9/64 " 14.1%
3/16 X 1/4 = 3/64 " 4.7%
3/16 X 3/4 = 9/64 " 14.1%
3/16 X 1/4 = 3/64 " 4.7%
1/16 X 3/4 = 3/64 " 4.7%
1/16 X 1/4 = 1/64 " 1.6%
The characters chosen for our experiment include the absence of stem and
flowers in the first year, and therefore would require a second year to
determine the flower-color on the perennial specimens. Instead of doing
so I have taken another character, shown by the teeth of the capsules
when opening. These curve outwards [304] in the red campion, but lack
this capacity in the evening-campion, diverging only until an upright
position is reached. The combination of hairs, colors and teeth gives
eight groups, and the counting of their respective numbers of
individuals gave the following:
Teeth
Hairs Flowers of capsules Number % Calculated
Hairy red curved 91 47 42.


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