4Q. How many different types of genotypes will be produced in the F2 of a cross where only 1 gene pair was segregating?
1. 1
2. 2
3. 3
4. 4
5. None of the above
Correct! The function describing the number of genotypes in the F2 is 3 raised to the n power. Thus, in this question, a single gene pair is 3^1 or 3. If you missed this question and the previous one, you may want to refer to the brief exercise in which various genetic components are calculated on the basis of the number of independently segregating genes.