Lectures On Heredity; Delivered Under the Auspices of the Washington Academy of Sciences

The book Lectures On Heredity; Delivered Under the Auspices of the Washington Academy of Sciences was written by author Jennings, H. S. (Herbert Spencer), 1868-1947. Observed Changes in Hereditary Characters in Relation to Evolution Here you can read free online of Lectures On Heredity; Delivered Under the Auspices of the Washington Academy of Sciences book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Lectures On Heredity; Delivered Under the Auspices of the Washington Academy of Sciences a good or bad book?

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11 10-21-15 infert.
9 El 6-26-08 hatch.
d'K 10-23-15 hatch.
9E2 6-28-08 hatch.
Jl 11-15-15 infert.
9F1 8- 9-08 hatch.
J2 11-17-15 infert.
9F2 8-11-08 hatch.
Kl 12-13-15 infert.
9G1 9-20-08 hatch.
K2 12-15-15 12-28-15 infert.
infert.
9G2 9-22-08 hatch.
LI cfAl 3- 2-09 hatch.
L2 12-30-15 infert." 9A2 3- 4-09 hatch.
" All of the succeeding 64 eggs produced by this pair— under continued "over- work"— have been tested for fertility.. Of these 62 were wholly infertile; the other two hatched (both are... males) .
riddle: control of sex ratio 325 eons and that the wider the cross the higher is the proportion of males. Family crosses produce, in nearly all matings, only male offspring. Generic crosses produce from their "stronger" germs — those of spring and early summer — nearly all males. If, however, the birds of such a generic cross be made to "overwork at reproduction," that is if their eggs are taken from them as soon as laid and given to other birds for incubation, then the same parents which in the spring threw all or nearly all male offspring may be made to produce all, or nearly all, female off- spring in late summer and autumn.

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