1) Bioscience 2) Cacogenic 3) Life science 1) Cacogenic 
Corneal dystrophy in a Labrador Retriever. Photo taken by Joel Mills on January 30, 2006. ...
<cell biology> System of breeding or selection that is genetically deleterious or disadvantageous. ... Origin: Gr. Gennan = to produce ... (18 Nov 1997) ... 
System of breeding or selection that is genetically deleterious or disadvantageous.
An action or process that is detrimental to the genetic qualities of a population. Usually applied to human actions, such as high grading or land clearing, which would reduce the local gene pool. 
Type: Term Pronunciation: dis-jen′ik Definitions: 1. Applying to factors that have a detrimental effect on hereditary qualities, physical or mental.
[adj] - pertaining to or causing degeneration in the offspring produced
dysgenic Relating to, or causing the biological impairment or deterioration of a strain or race; especially of humans.
cacogenic adjective pertaining to or causing degeneration in the offspring produced
pertaining to or causing degeneration in the type of offspring produced. Cf. eugenic.