The Law of Heredity: A Study of the Cause of Variation, and the Origin of Living OrganismsJ. Murphy, 1883 - 336페이지 |
도서 본문에서
34개의 결과 중 1 - 5개
18 페이지
... crossing is not the same when crosses are made reciprocally . 11. The sex of the parent - species affects the degree of variability of hybrids ; and when a hybrid is used as the father , and either one of the pure parent - species , or ...
... crossing is not the same when crosses are made reciprocally . 11. The sex of the parent - species affects the degree of variability of hybrids ; and when a hybrid is used as the father , and either one of the pure parent - species , or ...
61 페이지
... crossed with a drone of the Ital- ian bee she produces hybrid workers , while her male offspring are all pure German bees . In certain Lepidoptera , as in the bees , parthenogene- sis seems to be normal , and it has been observed in ...
... crossed with a drone of the Ital- ian bee she produces hybrid workers , while her male offspring are all pure German bees . In certain Lepidoptera , as in the bees , parthenogene- sis seems to be normal , and it has been observed in ...
74 페이지
... crossed with the female of another species or variety , the hybrid offspring is often very different from that which is produced when the female of the first species is crossed with the male of the second . If the function of the ovum ...
... crossed with the female of another species or variety , the hybrid offspring is often very different from that which is produced when the female of the first species is crossed with the male of the second . If the function of the ovum ...
86 페이지
... discord , and sterility from crossing be compared with the darkness re- sulting from the interference of waves of light . " Such symbolism will harmonize with the peculiar reproduction , before mentioned , of heads in the body 86 Heredity .
... discord , and sterility from crossing be compared with the darkness re- sulting from the interference of waves of light . " Such symbolism will harmonize with the peculiar reproduction , before mentioned , of heads in the body 86 Heredity .
101 페이지
... crossing . In order to breed together animals must be closely related ; they must belong to the same species or to ... crossing , that each parent can transmit to the child all its characteristics . Crossing simply results in the ...
... crossing . In order to breed together animals must be closely related ; they must belong to the same species or to ... crossing , that each parent can transmit to the child all its characteristics . Crossing simply results in the ...
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자주 나오는 단어 및 구문
acquired action adult alike allied species ancestor ancestral form asexual asexual reproduction become birds body breed characteristics color common conclusion confined crossing crustacea Daphnia Darwin Darwin says descendants domesticated animals domesticated pigeons embryo epigenesis evolution existence experience explanation fact female fertilized fortuitous fowls functions furnishes gemmules genera genus germ germinative vesicle give rise gradually greatly hereditary homology horns hybrid hydroids hypothesis individual influence inherited insects latent male cell male element males of allied medusa ment modification natural selection offspring ordinary origin origin of species ovum pangenesis parent parthenogenesis peculiarities perfect phenomena plants plastidules plumage present produced pure race reasons for believing reciprocal crosses reproductive elements resemblance result secondary sexual characters sexes sexual elements sexual reproduction sexual selection similar simply striped structure tendency to vary theory of heredity throw off gemmules tion transmission transmit true variable various young