Genetics & Inheritance MCAT Practice Question
A researcher studies incomplete dominance in snapdragons, where red flowers (RR) crossed with white flowers (WW) produce pink flowers (RW). A plant breeder crosses two pink snapdragons and observes the F1 generation. What phenotypic ratio is expected, and what does it reveal about the inheritance pattern?
Answer choices
- A1 red : 2 pink : 1 white; demonstrates incomplete dominanceCorrect answer
- B3 red : 1 white; demonstrates complete dominance
- CAll pink; demonstrates codominance
- D1 red : 1 white; demonstrates incomplete dominance
- EAll red and white; demonstrates segregation
- F1 red : 2 pink : 1 white; demonstrates codominance
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