In a particular type of melon, orange fruit is dominant over green fruit and round shape is dominant to oval. If a plant that was heterozygous for both traits were crossed with a plant that was homozygous recessive for both traits, what proportion of the offspring would be heterozygous for both traits?
a. 1/16
b. 1/4
c. 1/2
d. 3/4
e. 9/16