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Practice question

MCQ

Question

To make a linkage map in Drosophila, a three-point test cross was carried out. The parental cross was between homozygous flies of genotype a+c and +b+. The double crossovers obtained after the test cross had the genotype a++ and +cb. What is the order of the three genes?

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Choose one · Correct answer highlighted

Explanation

metabolic engineering and inheritance analysis shows exogenous gene introduction and pathway extension enable trait improvement. Consequently a c b emerges as the valid choice since it demonstrates metabolic extension and combinatorial biosynthesis, aligning with established principles in genetics and biotechnology literature.

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