Answer:
1/16
Step-by-step explanation:
See the Punnett square diagram to observe the result of the cross between the round and yellow plants (RrYy X RrYy).
Since round (R) is dominant over wrinkled (r) and yellow (Y) is dominant over y (green), the plant with genotype rryy would have wrinkled and green phenotype as these are recessive characters.
From the given cross in the Punnett square, we can observe that there is a total of 16 possible progenies and out of these only 1 has the wrinkled and green phenotype.
Therefore the probability is 1/16.