Gene Starvation — 61 — Genovariation 



Genetics. — Genetics is the science which seeks to account 

 for the resemblances and differences which are exhibited by 

 organisms related by descent (Babcock & Clausen). 



Genetype. — Genotype, q.v. 



Genie Balance. — A state of harmonious adjustment of the 

 interaction of the genes of an organism so that its development 

 is normal. The concept that an individual gene does not act 

 solely by reason of its inherent qualities but by reason of its 

 interaction with other genes in the gene-complex. 



Genitals. — The external reproductive organs. 



Genocline. — A geographical gradient in genetic composi- 

 tion (usually due to gene-flow). 



Genome, Genom. — A chromosome set, i.e. the chromosome 

 complement of a gamete. 



Genomere. — A hypothetical subdivision of a gene. 



Genome-mutation. — An alteration involving one or more 

 complete sets of chromosomes as in polyploidy (including 

 autopolyploidy and allopolyploidy), or involving one or more 

 approximately complete sets of chromosomes as in aneuploidy. 



Genonema-ta. — The protein frame-work of a chromonema. 



Genonomy. — The study of the familial relationships of the 

 individuals which comprise a species (Epling). 



Genorheithrum. — The stream of genes passing down a 

 phylogenetic stock (Cain, 1944). 



Genosome. — The physical part of a chromosome at the point 

 where a gene is located. 



Genospecies. — A group, all the members of which are geno- 

 typically identical. 



Genotype. — The entire genetic constitution, expressed and 

 latent, of an organism. The term can also be used in dealing 

 with the genetic constitution of an individual with respect to 

 any limited number of genes under examination. A group of 

 organisims all with the same factorial constitution. 



Genotypes, Number o£. — The number of distinct genotypes 

 expected in Y^ is given by calculating 3" where n is the number 

 of factor-pairs involved. In a backcross the number of geno- 

 types is 2^. 



Genotypic. — Pertaining to the genotype; controlled by the 

 genotype. 



Genotypic Control. — The genetic control of the activities 

 of chromosomes especially with regard to nuclear division. 



Genovariation. — A heritable change taking place at a single 

 gene locus, presumably caused by chemical alteration of the 



