Experiment: Humans were given a bitter compound on the tongue and asked to rate its intensity. Genotyping revealed differences in a taste receptor gene.Observation: Individuals with a specific allele rated the taste as more bitter.Question: What conclusion is supported?
Correct answer: A. Taste perception can be influenced by genetic variation.
- A. Taste perception can be influenced by genetic variation.
- B. Taste is unrelated to receptors.
- C. Bitterness is universally perceived the same.
- D. Only environment affects bitterness sensitivity.
Explanation
The correct answer is that taste perception can be influenced by genetic variation. The experiment demonstrated that individuals with a specific allele rated the bitter taste as more intense, indicating a genetic influence on taste perception. This conclusion aligns with the observation and the genetic basis of taste receptors. The other options are incorrect because they either disregard the genetic component or introduce unrelated factors like universality or environmental impact.
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About Scientific Reasoning
Scientific reasoning evaluates hypotheses through observations, variables, controls, measurements and experimental results. Questions involve identifying independent and dependent variables, recognising a fair test, interpreting tables or graphs, distinguishing evidence from opinion, and deciding whether data supports, rejects or leaves a hypothesis unresolved.
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