I
will now give two further illustrations afforded by crosses of the
ordinary campion. I used the red-flowered or day-campion, which is a
perennial herb, and a smooth variety of the white evening-campion, which
flowers as a rule in the first summer. The combination of flower-color
and pubescence gave the following composition for the second hybrid
generation:
Number % Calculation
Hairy and red 70 44 56.25%
Hairy and white 23 14 18.75%
Smooth and red 46 23 18.75%
Smooth and white 19 12 6.25%
For the combination of pubescence and the capacity of flowering in the
first year I found:
Number % Calculated
Hairy, flowering 286 52 56.25%
Hairy, without stem 128 23 18.75%
Smooth, flowering 96 17 18.75%
Smooth, without stem 42 8 6.25%
Many other cases have been tested by different writers and the general
result is the [303] applicability of Mendel's formula to all cases
complying with the given conditions.
Intentionally I have chosen for the last example two pairs of
antagonisms, relating to the same pair of plants, and which may be
tested in one experiment and combined in one calculation.
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