Q. The genotype of a plant showing the dominant phenotype can be determined by
A) Back cross
B) Test cross
C) Dihybrid cross
D) Pedigree analysis
Explanation
[Solution from source] In a test cross, the dominant-phenotype plant is crossed with a homozygous recessive. All dominant offspring mean it is homozygous, and a 1:1 ratio means it is heterozygous. A back cross can be made to either parent, so it does not necessarily reveal the genotype. Answer (2).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.