Maternal Inheritance and Maternal Effects

Genetics of Maternal Effects (cont.)

Unusual Results

• F₁ phenotypes are not the same
• Only one F₂ phenotype is expressed
• 3:1 ratio is seen in the F₃ not F₂ generation

Solve the Puzzle of this Distribution by Looking for Familar Results

• 3:1 ratio in the F₃

• Suggests that right coil shape is dominant to left shape

• Symbols: right = s⁺, left=s

Create a Hypothesis:

• The genotype of the mother determines the phenotye and distribution of the progeny