Answer:
The probability of a cross between RRYY x RrYy to generate a yellow and wrinkled seed offspring is 0%.
Explanation:
As seen in the question above, round and yellow seeds are dominant and wrinkled and green seeds are recessive. It is important to remember that resective characteristics are only presented when the offspring has two recessive alleles for those characteristic, if the offspring has a recessive allele and a dominant allele, the characteristic that will be presented is the dominant one.
For this reason, we can say that a cross between RRYY x RrYy plants, would not generate any offspring with wrinkled and yellow seeds. This is because, the offspring of a crossing, must present an allele of each parent. One parent only has dominant alleles (RRYY), so we can say that all offspring will receive 1 dominant allele for color and a dominant allele for seed texture, preventing the offspring from expressing recessive characteristics.
