25% 9
Blue, unarmed 3/4 X 1/4 = 3/16 = 18.75% 3
White with thorns 1/4 X 3/4 = 3/16 = 18.75% 3
White, unarmed 1/4 X 1/4 = 1/16 = 6.25% 1
In order to compare this inference from Mendel's law and the assumption
of independency, with the results of our experiments, we must calculate
the figures of the latter in percentages. In this way we find:
Found Calculated
Blue with thorns 128=51% 56.25%
Blue unarmed 47=19% 18.75%
White with thorns 54=22% 18.75%
White unarmed 21= 8% 6.25%
The agreement of the experimental and the theoretical figures is as
close as might be expected.
This experiment is to be considered only as an illustrative example of a
rule of wide application. The rule obviously will hold good in all such
cases as comply with the two conditions already premised, viz.: that
each character agrees with Mendel's law, and that both are wholly
independent of each other. It is clear that our figures show the
numerical composition [302] of the hybrid offspring for any single
instance, irrespective of the morphological nature of the qualities
involved.
Mendel has proved the correctness of these deductions by his experiments
with peas, and by combining their color (yellow or green) with the
chemical composition (starch or sugar) and other pairs of characters.
Pages:
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301