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.



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