Question

A dihybrid test cross-yielding a result of 1 : 1 : 1 : 1 ratio is indicative of

• A. 4 different types of $F_1$ generation dihybrids
• B. 4 different types of gametes produced by the $P_1$ parent
• C. 4 different types of gametes produced by the $F_1$ dihybrid
• D. Homozygous condition of the $F_1$ dihybrid

Answer 1

The correct option is A 4 different types of $F_1$ generation dihybrids

A test cross is used to test whether an organism exhibiting an organism exhibiting dominant trait is homozygous or heterozygous. A dihybrid test cross deals with two traits at a time and gives F1 ratio of 1:1:1:1 for a cross between a double heterozygote and a double recessive homozygote,

Thus, the correct answer is option A.