Epistasis 6.1 Flashcards
Epistasis
genetic interactions where one gene influences (masks) the effect of another gene
Epistatic gene
The gene that does the masking
Hypostatic gene
The gene whose effect is masked
Recessive epistasis
When the recessive alleles of one gene masks the effect at another
Recessive epistasis phenotypic ratio
9:4:3
Duplicate recessive epistasis
When the recessive alleles of both genes mask the effect of the other
Both dominant alleles requires color
Duplicate recessive epistasis phenotypic ratio
9:7
Dominant epistasis
When a dominant allele masks the effect of another gene
Dominant epistasis phenotypic ratio
12:3:1
Duplicate dominant epistasis
When the dominant allele of each gene masks the effect of the other
Duplicate dominant epistasis phentoypic ratio
15:1
One dominant, one recessive epistasis
Additive genes
genes that code for the same trait and their effects work together on the phenotype
One dominant, one recessive epistasis
when dominant alleles at one locus mask the effect of the allele at a second locus, and the recessive alleles at the second locus mask the effect of the alleles of the first locus
One dominant, one recessive epistasis phenotypic ratio
13:3
