The Science of Life, Volumen 4Cassell, 1931 - 896 páginas |
Dentro del libro
Resultados 1-3 de 79
Página 288
... effect upon the actual constitution within . When the bean is sown it is its interior constitution which asserts itself , not the accidental excess or defect of its weight ; and the new plant develops as do all other plants of that ...
... effect upon the actual constitution within . When the bean is sown it is its interior constitution which asserts itself , not the accidental excess or defect of its weight ; and the new plant develops as do all other plants of that ...
Página 359
... effect . For example , it is probably true ( though statistics do not appear to have been col- lected ) that the sons of blacksmiths are on the average physically stronger than the sons of , say , tailors . But is it not likely that men ...
... effect . For example , it is probably true ( though statistics do not appear to have been col- lected ) that the sons of blacksmiths are on the average physically stronger than the sons of , say , tailors . But is it not likely that men ...
Página 370
... effect could be produced by stringent selection for more or for less black . In one lot he bred only from those with most m4th GENERATIONS OF SELECTION O16th drew the " hood " spread the black line down on either side . along the back ...
... effect could be produced by stringent selection for more or for less black . In one lot he bred only from those with most m4th GENERATIONS OF SELECTION O16th drew the " hood " spread the black line down on either side . along the back ...
Índice
THE RANGE NATURE AND STUDY OF LIVING THINGS | 3 |
66 | 5 |
muscles and related | 8 |
Otras 62 secciones no se muestran.
Otras ediciones - Ver todo
Términos y frases comunes
active algæ animals arthropods bacteria become birds blood body bones brain branches called capillaries carbon carbon dioxide cells Cenozoic changes chemical chromosomes colour creatures crustaceans digestive Echinoderms eggs elaborate embryo Eocene Everyman evolution example eyes fact female fertilized fish flatworms flowers fluid forms fossils gametes genes germ-plasm glands grow growth heart human Ichthyosaurs important individual insects intestine kidneys kinds land larvæ layer less limbs liver living things lobster lungs male mammals marsupials matter means ment microscopic million molluscs mouse mouth movements muscles mutations nervous system normal notochord Obelia organs ovary ovum oxygen pair parasitic phylum plants polyps produced proteins prothallus protozoa reproduction reptiles round secretion sense-organs sexual shell skeleton skin species spermatozoa sperms spores stage starfish stomach structure substances surface swim tail teeth thyroid tiny tion tissue to-day tube types variations various vertebrates whole worms