In an Imagined Transduction Experiment with Alleles A⁺, B⁺, and C⁺

question 2

Multiple Choice

In an imagined transduction experiment with alleles a⁺, b⁺, and c⁺, a⁺ alone was transduced into an auxotroph 1400 times, b⁺ alone 1200 times, and c⁺ alone 970 times. Genes a⁺ and b⁺ were both found 10 times, b⁺ and c⁺ 2 times, and a⁺ and c⁺ one time. What can you conclude?

• A)Cotransduction is too infrequent to be used to map genes.
• B)Genes a and c cotransduce only accidentally.
• C)Genes a and b are more closely linked than a and c or b and c.
• D)Genes a and c are found together only if double crossovers have occurred.
• E)Transduction of gene c is very rare.

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