Question

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

Answer 1

Correct option (a) test cross

Explanation

 In genetics, a test cross, first introduced by Gregor J Mendel, is used to determine if an individual exhibiting a dominant trait is homozygous or heterozygous for that trait. 

More simply, test cross determines the genotype Of an individual with a dominant phenotype. In some sources, the test cross is defined as being a type of back cross between the recessive homozyggte and F₁-generation.