MHT CET Biology question
A homozygous sweet pea plant with blue flowers (RR) and long pollen (R₀R₀) is crossed with a homozygous plant having red flowers (rr) and round pollen (r₀r₀). The resultant F₁-hybrid is test crossed. Which of the following genotype does not appear in its progeny?
Answer: (B)
Solution
The F₁ hybrid is RrR₀r₀ and the tester is rrr₀r₀, so every test-cross progeny carries the tester's recessive
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