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The Main Problems
The Theory of Special Creation 85
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acquired characters adaptation agamic reproduction alteration animals appears auto-catalyst biological blastomere blood cause chapter chemical chromatin complex conclusion considered continued cytoplasm Darwin definite differentiation of species direction disuse Driesch E. B. Wilson effect embryo environment enzymes evolution experiments explanation external extinction fact factors favour fluctuating gemmules germ germ-cells germ-plasm give rise glands Growth and Senescence hereditary Heredity hormone stimulation Hormone Theory hypothesis illustrated increase individual inevitably influence inheritance of acquired Lamarckian Living Organisms Mendelian ment metabolic metazoa modifications muta Mutation Theory natural death natural selection normal nourishment nuclear ratio nuclear substance nucleus nutrient level nutrition observed occur offspring origin of mutations ovum pangenesis pangens particular phenomena pigment plants possible problems produced protoplasm protozoa put forward question race Ray Lankester reaction reduction result says secretion senescence soma somatic specialisation suggestion T. H. Morgan tion transmission type of cell variation Vries Weismann whole