QQuestionBiology
QuestionBiology
A 9:3:3:1 ratio of phenotypes in the F^2 generation of a dihybrid cross:
A. indicates that the dihybrid cross is basically equivalent to two independent monohybrid crosses.
B. holds true only for genes on the same chromosome.
C. is not indicative of independent assortment.
D. indicates that an epistatic relationship exists between the two genes under investigation.
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Step 2: Understanding Dihybrid Cross Ratios
The 9:3:3:1 phenotypic ratio is a classic result of a dihybrid cross between two heterozygous parents where genes are independently assorting.
Final Answer
A - The 9:3:3:1 ratio indicates that the dihybrid cross is basically equivalent to two independent monohybrid crosses.
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