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noona noona
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9 years ago
In Drosophila, mutation screening usually involves use of a balancer chromosome that includes three elements: a set of overlapping inversions, an easily recognized dominant mutation, and a recessive lethal mutation that prevents balancer homozygotes from surviving. Which one, or combination, of these elements is necessary and sufficient to suppress crossovers?

A   lethal plus inversions
B   inversions plus dominant
C   inversions
D   dominants
E   lethal recessive
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wrote...
Educator
9 years ago
Hello!

Try these:

1) MasteringGenetics chpt 17 questions! (reverse genetics & transgenic organisms)
2) [Solved] In Drosophila, mutation screening usually involves use of a balancer chromosome
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