According to what principle can the new phenotypes (i.e. those phenotypes different from any in the P generation) that should occur in any cross of two or more characters, called a multihybrid cross, be determined? Use this principle to determine what the phenotypes should be in the cross described in question 10. All multihybrid crosses follow this principle no matter how many characters are considered as long as all the characters have independent genes. Use the principle to determine what the phenotypes should be if a third character were added to the original cross.
The new phenotypes (i.e. those phenotypes different from any in the P generation) that should occur in any cross of two or more characters, called a multihybrid cross, are determined based on the principle that the chance of independent events occurring together equals the product of the chances of each event occurring separately. In the example from question 10, the number of offspring in the F2 generation with both green and constricted pods is determined by multiplying the expected percentage of green pods in the F2 generation of a monohybrid cross (3/4) by the expected percentage of constricted pods in the F2 generation of a monohybrid cross (1/4). Multiplying 3/4 by 1/4 equals 3/16, and, therefore, there would be 3 green/constricted pod F2 individuals out of 16 total possibilities in a dihybrid cross
