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Which of the following represents a test cross in which half the offspring is heterozygous and half would be homozygous recessive?
Which of the following represents a test cross in which half the offspring is heterozygous and half would be homozygous recessive?
Updated On: Nov 6, 2024
- TT × tt
- Tt × tt
- Tt × Tt
- tt × tt
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The Correct Option is B
Solution and Explanation
A test cross is used to determine the genotype of an individual showing a dominant trait. When a heterozygous (Tt) individual is crossed with a homozygous recessive (tt) individual, the offspring will show a 1:1 ratio. Half of the progeny will be heterozygous (Tt), displaying the dominant trait, and the other half will be homozygous recessive (tt), showing the recessive trait.
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