Gene interactions you must know

What is the phenotypic ratio when gene interaction: None, Four distinct F₂ phenotypes

9:3:3:1

What is the phenotypic ratio when gene interaction: Complementary, One dominant allele of each of two genes is necessary to produce phenotype

9:7

What is the phenotypic ratio when gene interaction: Recessive epistasis, Homozygous recessive of one gene masks both alleles of another gene

9:3:4

What is the phenotypic ratio when gene interaction: Dominant epistasis I, dominant allele of one gene hides effects of both alleles of another gene

12:3:1

What is the phenotypic ratio when gene interaction: Dominant epistasis II, Dominant allele of one gene hides effects of dominant allele of the other gene

13:3

What is the phenotypic ratio when gene interaction: Redundancy, only one dominant allele of either of the two genes is necessary to produce phenotype

15:1