1. Incomplete Dominance

2. INCOMPLETE DOMINANCE!
2 alleles are neither dominant nor recessive…neither of the two alleles in a gene pair masks/hides the other.
The result is a complete blending of traits, because neither one is stronger than the other.

3. How do we represent the genotypes of incomplete dominance traits?
We use all CAPITAL LETTERS
EX: RY, RW, BW….etc
If we cross breed a pure purple flowering plant with a pure white flowering plant, what would be the resulting offspring?

4. What is the genotype of a pure white flowering plant?
What is the genotype of a pure purple flowering plant? PP
What is the genotype of a pure white flowering plant? WW
PP x WW
Genotype
% PP
% WW
% PW
W W P PW PW
100
Phenotype
% Purple
% White
% Lavender PW PW
100

5. How would you represent an incomplete dominance cross between a pure red flower and a pure yellow flower?

6. What is the genotype of a pure yellow flowering plant?
What is the genotype of a pure red flowering plant? RR
What is the genotype of a pure yellow flowering plant? YY
RR x YY
Genotype
% RR
% YY
% RY
Y Y R RY RY
100
Phenotype
% Red
% Yellow
% Orange RY RY
100

7. What is the genotype of a hybrid orange flowering plant?RY
RY x RY
Genotype
% RR
% YY
% RY 25
R Y 25 R Y RR RY 50
Phenotype
% Red
% Yellow
% Orange 25 RY YY 25 50

8. PURE GOLD Breeding a pure brown with a pure white… BB x WW W W B BW BW
Genotype
% BB
% WW
% BW
W W B BW BW
100
Phenotype
% Brown
% White
% Palomino BW BW
100