In strawberries, the gene for red berry color is incompletely dominant over white.
In strawberries, the gene for red berry color is incompletely dominant over white. What is the probability of getting a plant with red berries when crossing heterozygous plants with plants with white berries? Is it possible to obtain homozygous red berry plants, what%?
Let A be the gene of red color of berries, then a – white. Aa heterozygotes are pink.
If the parent individuals are Aa (pink berries, since heterozygotes) and aa (white berries), then the offspring will be with Aa and aa, because one gene comes from the mother plant and the other from the father. This means that in this case there will be no red-berry plants, but there will be 50% with pink berries and 50% with white berries. Redberry plants can only be obtained by crossing 2 heterozygous plants with a 25% probability.