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Biology · 2025 · 1 mark
CBSE 2025 · Region 1 · Set 3 · Q12
Which of the following is correct for the condition when plant YyRr is back crossed with the double recessive parent?
Which of the following is correct for the condition when plant YyRr is back crossed with the double recessive parent ?
Official answer
(D)
$\displaystyle 1$ : $\displaystyle 1$ : $\displaystyle 1$ : $\displaystyle 1$ ratio of phenotypes and genotypes
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CBSE Class 12 Biology past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.