Question

Which gene position can be determined by examining the double-crossover class of a three-point cross?

Answer 1

The gene position that can be determined by examining the double-crossover class of a three-point cross is the middle gene.

Step-by-step explanation:

The gene position that can be determined by examining the double-crossover class of a three-point cross is the middle gene. In a three-point cross, three genes are being analyzed at once. When a double crossover occurs between the outer genes, the middle gene is the one that determines the crossover pattern. By examining the double-crossover class, we can infer the position of the middle gene.