CBSE 2026 · Region 4 · Set 2 · Q19 · 2 marks
Study the figures given below and answer the questions. Cross - A
Cross - B Identify in which of the crosses the strength of linkage between the genes is higher. Give reason in support of your answer.
Cross - B Identify in which of the crosses the strength of linkage between the genes is higher. Give reason in support of your answer.Marking-scheme solution
• Strength of linkage is higher in Cross-A
• The two genes are closer to each other than those in cross -B closer the genes
higher is the strength of linkage and // In Cross B genes are loosely linked larger the distance weaker is the linkage.
Principles of Inheritance and VariationInheritance of Two GenesAnalysevery_short_answermedium
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CBSE Class 12 Biology past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.