4. Epistasis Flashcards
1
Q
define epistasis
A
when alleles supress the expression of genes at a different locus
2
Q
define recessive epistasis
A
when the presence of two recessive alleles at the first locus, prevents the expression of the allele at the second locus
3
Q
what is the phenotypic ratio for recessive epistasis?
A
9:3:4
4
Q
what is dominant epistasis
A
where having one allele from the gene at the first locus will block the expression of the gene at the second locus
5
Q
what is the phenotypic ratio during dominant epistasis from a homozygous dominant and recessive parent?
A
12:3:1
6
Q
what is the phenotypic ratio for recessive epistasis?
A
9:3:4
