CBSE 2023 · Region 1 · Set 2 · Q1 · 1 mark
Three genes R, S and T are located on the same chromosome. If the recombinant percentage between R and S is $\displaystyle 20 \%, \mathrm{R}$ and T is $\displaystyle 35 \%$ and S and T is $\displaystyle 15$% respectively, can you predict the correct order of these genes on the chromosome ? Which of the following shows the correct sequence of the genes on the chromosome ?
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle \mathrm{R} - \mathrm{S} - \mathrm{T}$
Principles of Inheritance and VariationInheritance of Two GenesApplymcqmedium
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CBSE Class 12 Biology past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.