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NEET2011ZoologyPrinciples of Inheritance and VariationActual

Test cross in plants of in Drosophila involves crossing

Options

  1. Abetween two genotypes with recessive trait
  2. Bbetween two F ₁ hybrids
  3. Cthe F₁ hybrid with a double recessive genotype
  4. Dbetween two genotypes with dominant trait

Correct answer

C. the F₁ hybrid with a double recessive genotype

Step-by-step solution

When F ₁ hybrid is crossed with recessive parent then it is called test cross. It is also a back cross. Test cross is done to test whether the dominant parent is heterozygous or homozygous.

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