Principles of Inheritance and Variation Question 39
39. The genotype of a plant showing the dominant phenotype can be determined by:
(a) test cross
(b) dihybrid cross
(c) pedigree analysis
(d) back cross
Show Answer
Answer : a
Hints & Solution
(a) Test cross is the cross of an individual having dominant phenotype with an individual having recessive phenotype. It is used to determine the genotype of a plant showing the dominant phenotype, that means to determine whether the individual exhibiting dominating characters are homozygous or heterozygous.
