Answer:
9:3:3:1
Explanation:
9 of the 16 possible genotypes have a capital R and a capital Y. This means they all have the phenotype of round and yellow.
3 out of 16 have small r's and at least one capital Y. This gives a three in 16 chance for a crippled yellow phenotype. similarly, there's a 3 out of 16 chance to get the phenotype of round green phenotype.
There is only a 1 in 16 chance to get the phenotype of crippled green. Putting these numbers in a ratio gives 9:3:3:1.
