Modes of Selection

At the lowest level is selection among genes in mere capacity to persist and in mechanism of exact duplication. It seems probable, as suggested by Darwin (cf. Hardin 1950) and developed by Haldane (1933) and Oparin (1938), that life originated in an organic soup that could only have accumulated in the prior absence of life and that was one that provided all necessary metabolites. It is hardly probable that the chemical basis for gene persistence and duplication appeared full fledged. We may conclude with Blum (1951) that evolution took the form at first of decreasing mutability. Along with this may have occurred the evolution of stable genic association in cells, and mechanisms of exact duplication of the entire system by mitosis. *Address of the President, Society for the Study of Evolution, delivered at the

[1]  W. Hollander,et al.  Introgressive Hybridization , 1949, The Yale Journal of Biology and Medicine.

[2]  S. Wright.  Fisher and Ford on "The Sewall Wright effect.". , 1951, American scientist.

[3]  W. Castle,et al.  Studies of Inheritance in Guinea-Pigs and Rats , 2010 .

[4]  Hepsa Ely,et al.  The Material Basis of Evolution , 1915, Nature.

[5]  J. King.  Integration of the Gene Pool as Demonstrated by Resistance to DDT , 1955, The American Naturalist.

[6]  R. Goldschmidt.  Homoeotic mutants and evolution , 1952 .

[7]  Sewall Wright,et al.  Physiological and Evolutionary Theories of Dominance , 1934, The American Naturalist.

[8]  R A Fisher,et al.  The “Sewall Wright Effect” , 1950, Heredity.

[9]  D. Watson.  Vertebrate Paleontology , 1946, Nature.

[10]  Sewall Weight.  Statistical Theory of Evolution , 1931 .

[11]  N H Horowitz,et al.  On the Evolution of Biochemical Syntheses. , 1945, Proceedings of the National Academy of Sciences of the United States of America.

[12]  T. Dobzhansky,et al.  Genetics of natural populations. XIX. Origin of heterosis through natural selection in populations of Drosophila pseudoobscura. , 1950, Genetics.

[13]  Hans Grüneberg,et al.  The mutants of drosophila melanogaster , 1944 .

[14]  J. Crow.  Alternative Hypotheses of Hybrid Vigor. , 1948, Genetics.

[15]  R. Fisher.  The theory of inbreeding , 1949 .

[16]  S. Wright.  On the genetics of hair direction in the guinea pig. III. Interactions between the processes due to the loci R and St. , 1950 .

[17]  T. Dobzhansky,et al.  The Genetics of Homeostasis in Drosophila. , 1953, Proceedings of the National Academy of Sciences of the United States of America.

[18]  E. Dempster,et al.  Attenuation of genetic progress under continued selection in poultry , 1951, Heredity.

[19]  Sewall Wright,et al.  Fisher's Theory of Dominance , 1929, The American Naturalist.

[20]  Harold Francis Blum,et al.  Time's Arrow and Evolution , 1951, The Yale Journal of Biology and Medicine.

[21]  T. Dobzhansky,et al.  GENETIC HOMEOSTASIS , 1955 .

[22]  Sewall Wright,et al.  Breeding Structure of Populations in Relation to Speciation , 1940, The American Naturalist.

[23]  S. Wright,et al.  The Distribution of Gene Frequencies Under Irreversible Mutation. , 1938, Proceedings of the National Academy of Sciences of the United States of America.

[24]  Bruce Wallace,et al.  On Coadaptation in Drosophila , 1953, The American Naturalist.

[25]  Leslie L. R. White.  Animal evolution: a study of recent views of its causes , 1952 .

[26]  Sewall Wright,et al.  ON THE ROLES OF DIRECTED AND RANDOM CHANGES IN GENE FREQUENCY IN THE GENETICS OF POPULATIONS , 1948, Evolution; international journal of organic evolution.

[27]  S. Wright.  Estimates of Amounts of Melanin in the Hair of Diverse Genotypes of the Guinea Pig, from Transformation of Empirical Grades. , 1949, Genetics.

[28]  J. Haldane,et al.  The Causes of Evolution , 1933 .

[29]  J. Gilmour,et al.  Demes: A Suggested New Terminology , 1939, Nature.