The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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النتائج 6-10 من 27
الصفحة 326
... marry men who are also carriers . There is considerable variation in the shape of the human hand . Most of these forms have little significance but some of them are important as when the fingers all coalesce into a hook . The common ...
... marry men who are also carriers . There is considerable variation in the shape of the human hand . Most of these forms have little significance but some of them are important as when the fingers all coalesce into a hook . The common ...
الصفحة 328
... marriages and 32 per cent of them had deaf relatives . Some deafness is the result of disease and accident , to ... marriage and there is real danger of the formation of a deaf strain unless care be taken . It has long been thought ...
... marriages and 32 per cent of them had deaf relatives . Some deafness is the result of disease and accident , to ... marriage and there is real danger of the formation of a deaf strain unless care be taken . It has long been thought ...
الصفحة 333
... marriage of two affected individuals and also the effects of crossing a normal stock with an affected stock even though the member of the latter be normal . In the third we have another illustra- tion wherein the father of normal ...
... marriage of two affected individuals and also the effects of crossing a normal stock with an affected stock even though the member of the latter be normal . In the third we have another illustra- tion wherein the father of normal ...
الصفحة 335
... Marriage Father Remarries 11 children all normal Three children defective FIG . 26. CONTRAST IN CHILDREN OF TWO MARRIAGES evidence . Goddard has cited an apparent exception to the last statement wherein two normal children appeared in a ...
... Marriage Father Remarries 11 children all normal Three children defective FIG . 26. CONTRAST IN CHILDREN OF TWO MARRIAGES evidence . Goddard has cited an apparent exception to the last statement wherein two normal children appeared in a ...
الصفحة 352
... marriage . But the lower grades are practically eliminated from the discus- sion for they seldom propagate . The higher grades care little for such prohibitions and will reproduce without refer- ence to statutory requirements . We are ...
... marriage . But the lower grades are practically eliminated from the discus- sion for they seldom propagate . The higher grades care little for such prohibitions and will reproduce without refer- ence to statutory requirements . We are ...
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acres Africa America appears areas Asia atoms average bacteria believe birds body carbon carbon dioxide cause cent century cephalic index changes characters chromosomes civilization climate color common copper crops cultivated culture danger Darwin death rate destroy disease domestic early earth eggs environment Europe European evidence fact feeble-minded females fish forms germ cells given heredity human Ibid important increase Indians individual inheritance insane insects iron killed known land later light living male man's marriage metals miles natural selection nature Negro neolithic organisms ovum oxygen Pará rubber tree parasites physical population possible pounds present problems produced R. S. LULL race seeds seems social South South America species square mile supply T. H. MORGAN temperature things thousand tion to-day trees tropics types United wild woman women