Genetic Ratios

• all ratios in this flashcard set are phenotypic ratios
• monohybrid cross between heterozygous and heterozygous (Hh x Hh) is 3 : 1
• monohybrid cross between heterozygous and homozygous recessive (Hh x hh) is 1 : 1
• dihybrid cross between heterozygous and heterozygous (AaHh x AaHh) is 9 : 3 : 3 : 1
• dihybrid cross between heterozygous and homozygous recessive (AaHh x aahh) is 1 : 1 : 1 : 1
• heterozygous x heterozygous of co-dominant/incomplete dominance (Rr x Rr) is 1 : 2 : 1