Principle of Inheritance and VariationMediumBloom L1
Question
Lack of independent assortment of two genes A and B in fruit fly Drosophila is due to
Options
A.repulsion
B.recombination
C.linkage
D.crossin over
Solution
(c) [Key Concept: Linkage — Drosophila] The lack of independent assortment of genes A and B in Drosophila is due to LINKAGE. When genes are physically located on the same chromosome, they tend to be inherited together (linked) rather than assorting independently. Morgan discovered linkage in Drosophila and showed that genes on the same chromosome are inherited together more often than expected from independent assortment.
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