- Dysgenesis
Dysgenesis can be used for:
*As a synonym for
agenesis referring to the failure of an organ to develop during embryonic growth and development.*To refer to a population undergoing artificial selection, where selection is producing a population considered less evolutionarily fit. [Graves, J. L. "The Emperors New Clothes:Biological Theories of Race at the Millennium" (2001) "Intellectual dysgenesis, for Galton, resulted from the less intelligent classes reproducing at rates higher than the more intelligent classes." p. 98 ISBN 0-8135-3302-3] [For example hybrid dysgenesis in "Drosophila" is a "syndrome of correlated genetic traits... (mutation, chromosomal aberration, distorted segregation, and sterility)" high frequencies of which "do not occur under natural conditions" because "their effects would be expected to result in a drastic reduction of population fitness". Bregliano, J. C., G. Picard, A. Bucheton A. Pelisson, J. M. Lavige, P. L'Heritier (1980) " [http://www.sciencemag.org/cgi/reprint/207/4431/606.pdf Hybrid Dysgenesis in Drosophila melanogaster] " "Science" 207:606-611] The study of dysgenesis in populations is termed
dysgenics . ["the study of the operation of factors causing degeneration in the type of offspring produced" [http://wordnet.princeton.edu/perl/webwn?s=dysgenics&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=0] ] ["pertaining to or causing degeneration in the offspring produced" [http://wordnet.princeton.edu/perl/webwn?s=dysgenic&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=0] ] ["System of breeding or selection that is genetically deleterious or disadvantageous." [http://cancerweb.ncl.ac.uk/cgi-bin/omd?action=Search+OMD&query=dysgenics] ] ["System of breeding or selection that is genetically deleterious or disadvantageous." [http://cancerweb.ncl.ac.uk/cgi-bin/omd?dysgenic] ] [Causing a reduction of desirable genetic qualities in natural or production populations. [http://www.fgcouncil.bc.ca/doc-glos.html#anchor5487760] ]ee also
*
Dysgenics
*Hybrid dysgenesis
*Gonadal dysgenesis Footnotes
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