Same chapter3 marksDifficulty: Medium
Name three genetic disorders in human beings and state the cause of each.
Principles of Inheritance and Variation
3 marksDifficulty: Medium
What is linkage, and how did Morgan demonstrate it?
Original Khojo Papers practice question — not from a past board paper.
Answer
Linkage is the tendency of genes on the same chromosome to be inherited together rather than assorting independently. Morgan demonstrated it in Drosophila by crossing flies for two pairs of characters and finding that the parental combinations appeared far more often than the recombinant ones, contrary to independent assortment.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The frequency of recombination is used to map the distance between genes.
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