Footnotes to Evolution: A Series of Popular Addresses on the Evolution of LifeD. Appleton, 1898 - 392 pagini |
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Termeni și expresii frecvente
acquired characters adaptation altruism ancestors ancestry animal or plant become biological birds blood body Boveri centrosome chromatin chromosomes colony colour competition concession conjugation creatures cytoplasm Darwin descendants division earth Echinus egg cell elements embryo embryology environment evidence extrinsic fact factors fauna fish fittest food yolk forces forms function Galapagos germ cell germinal protoplasm growth Herbert Spencer hereditary heredity homology human increase individual influence inheritance intrinsic causes islands known larva larvæ less Linnæus living mammals ment modified mother natural selection naturalists never nucleus organic evolution Origin of Species parent peculiarities phenomena pineal eye plasm produced progress protoplasm protozoa question rabbit race recognised relations reproduction result Richard Roe Sacculina says shown simple somatic special creation sperm spermatozoa Sphærechinus stages structure struggle for existence survival tetrads tion true variation variety vertebræ vertebrates Weismann words