In an Experiment Two Inbred Strains Are Mated to Each

question 30

Multiple Choice

In an experiment two inbred strains are mated to each other and the offspring demonstrate heterosis. The offspring (F₁'s) are crossed to each other and a ratio is obtained where there are 9 individuals that demonstrate heterosis and 7 that are similar to the original parental generation. What is this most likely a demonstration of?

• A)Dominance hypothesis
• B)Overdominance hypothesis
• C)Cannot tell from the information given.
• D)That there is a significant environmental interaction in phenotypic development

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