Among the following the test cross is_________________?
Correct answer: D. Ttxtt
- A. TTxTT
- B. TTxTt
- C. TtxTt
- D. Ttxtt
Explanation
A test cross mates an individual showing the dominant trait with a homozygous recessive, such as Tt × tt. It reveals the unknown genotype through the offspring's phenotypes.
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