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Q.
Which is not true for test cross?
NTA AbhyasNTA Abhyas 2020Principles of Inheritance and Variation
Solution:
In a test cross, to know the genotype of the individual, it is crossed with a recessive parent. If a plant with dominant phenotype is homozygous than all individual produced shows dominant phenotype. If a plant with dominant phenotype is heterozygous than F2 dihybrid test cross ratio $1:1:1:1$ .