CBSE 2024 · Region 2 · Set 1 · Q2 · 1 mark
Match the items in Column I with those in Column II and select the correctly matched option from those given below :
Column I (Cross) Column II (Phenotypic Ratio) 1. Mendelian monohybrid (i) $\displaystyle 1: 2: 1\left(\mathrm{~F}_{2}\right)$ 2. Mendelian dihybrid (ii) $\displaystyle 1: 1$ 3. Incomplete dominance (iii) $\displaystyle 3: 1\left(\mathrm{~F}_{2}\right)$ 4. Test cross (monohybrid) (iv) $\displaystyle 9: 3: 3: 1\left(\mathrm{~F}_{2}\right)$
| Column I (Cross) | Column II (Phenotypic Ratio) | |
| 1. Mendelian monohybrid | (i) | $\displaystyle 1: 2: 1\left(\mathrm{~F}_{2}\right)$ |
| 2. Mendelian dihybrid | (ii) | $\displaystyle 1: 1$ |
| 3. Incomplete dominance | (iii) | $\displaystyle 3: 1\left(\mathrm{~F}_{2}\right)$ |
| 4. Test cross (monohybrid) | (iv) | $\displaystyle 9: 3: 3: 1\left(\mathrm{~F}_{2}\right)$ |
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle 1$ (iii), $\displaystyle 2$ (iv), $\displaystyle 3$ (i), $\displaystyle 4$ (ii)
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CBSE Class 12 Biology past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.