Question

Test cross involves-

• A. Crossing between two genotypes with recessive trait
• B. Crossing between two $F_1$ hybrids
• C. Crossing the $F_1$ hybrid with a double recessive genotype
• D. between two genotypes with dominant trait.

Answer 1

Answer: (C)

Crossing the $F_1$ hybrid with a double recessive genotype

Answer 2

In test cross, F1 individual showing a dominant phenotype is crossed with homozygous recessive parent. The progenies of such a cross can easily be analysed to predict the genotype of the test organism.