Question

Assertion :A genetist crossed two plants. He got $50$ tall and $50$ dwarf plants in the progeny. Reason: One parent was heterozygous tall while the other was dwarf.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

Answer: (A)

In a test cross a hybrid (heterozygous tall- Tt) is crossed with a homozygous recessive plant (tt). Such a cross will result in 50% of the progeny being tall (with genotype Tt) and 50% dwarf (with genotype tt). So, the correct option is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.