Genetic Ratios
A and B have distinct traits, A overrules B, aabb lacks trait
12:3:1
Either A or B required, aabb the only non-trait
15:1
AaBb x aabb
1:1:1:1 genotypic ratio
AaBb x aabb
1:1:1:1 phenotypic ratio
A_ and aa produce dom/rec, but only if B is present. bb produces different phenotype
9:3:4
Either A or B required, but have different form when together
9:6:1
both A and B required
9:7
1:2:1
Aa x Aa - genotypic ratio
3:1
Aa x Aa - phenotypic ratio
1:1
Aa x aa - genotypic ratio
1:1
Aa x aa - phenotypic ratio
9:3:3:1
AaBb x AaBb phenotypic ratio
1:2:4:2:1:2:1:2:1
AaBb x AaBb, genotypic ratio
12:3:1
Epistasis phenotypic ratio: AaBb x AaBb -A and B produce distinct traits, A overrules B, aabb lacks either triat.
9:3:4
Epistasis phenotypic ratio: AaBb x AaBb -A_ and aa produce distinctive dom/rec trait, but only if B is present. There is a different phenotype if bb is present.
9:6:1
Epistasis phenotypic ratio: AaBb x AaBb -either A or B is sufficient to produce one form of trait, but differs form when together.
15:1
Epistasis phenotypic ratio: AaBb x AaBb -either A or B is sufficient to produce trait (only aabb lacks)
9:7
Epistasis phenotypic ratio: AaBb x AaBb -if both A and B are required for expression
Aa x aa
Genotypic 1:1 ratio, simple mendelian. What are the parents?
Both heterozygotes (Aa x Aa)
Genotypic 1:2:1 ratio, simple mendelian. What are the parents?
AaBb x AaBb
Genotypic 1:2:4:2:1:2:1:2:1 ratio
Aa x aa
Phenotypic 1:1 ratio, simple mendelian. What are the parents?
Both heterozygotes (Aa x Aa)
Phenotypic 3:1 ratio, simple mendelian. What are the parents?
AaBb x AaBb
Phenotypic 9:3:3:1
1:1:1:1
genotypic ratio of AaBb x aabb
1:1:1:1
phenotypic ratio of AaBb x aabb