In Maize,two Plants That Are Both Heterozygous for the Recessive

question 46

Multiple Choice

In maize,two plants that are both heterozygous for the recessive alleles a and b are crossed.What frequency of double-mutant progeny will appear if a and b are 7.2 map units apart,and both parents carry a and b in repulsion (trans) ?

• A)0.001296
• B)0.005184
• C)0.036
• D)0.0625
• E)0.072

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