BIO 30_Lec 3_Dominance Relationships + Concepts

AA and Aa have the same phenotype; the presence of a dominant allele is enough to express the dominant trait

Complete dominance F2 Genotypic and Phenotypic ratio (#AA..., #:#...)

F1 phenotype is intermediate

Incomplete dominance F2 Genotypic and Phenotypic ratio (#AA..., #:#...)

Complete dominance F2 Genotypic and Phenotypic ratio; Heterosis/Hybrid vigor

the products of the two alleles in the heterozygote are present

Usual maximum allele in one chromosome

lethal when homozygous recessive

recessive lethal genes GR, PR (#Yy:..,#:#...)

lethal when homozygous dominant or heterozygous, PR