Mendel found no dominance in snapdragons with respect to red and white flower color. When pure red (RR)and pure white (rr)parents are crossed, the resulting Rr combination (one of each Gene)produces second generation offspring with pink flowers. Suppose one of these second Generation pinks is crossed with a pure red. What is the probability that the resulting snapdragon Will have red flowers?
A)0.25
B)1
C)0.75
D)0.5

Question

Quizplus · Accepted Answer

The cross between a pink snapdragon (Rr) and a pure red snapdragon (RR) will result in offspring with genotypes RR and Rr in a 1:1 ratio. Since both RR (red) and Rr (pink) phenotypes show red color in this context, 50% (or 0.5 probability) of the offspring will have red flowers.

Mendel Found No Dominance in Snapdragons with Respect to Red