Q. Test cross involves :
A) crossing between two genotypes with recessive trait
B) crossing between two F₁ hybrids
C) crossing the F₁ hybrid with a double recessive genotype
D) crossing between two genotypes with dominant trait
Explanation
[Solution from source] In a test cross the F₁ (or any dominant-phenotype) plant is crossed with the homozygous recessive parent to find its genotype. Crossing two F₁ hybrids is selfing that gives the F₂. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.