Question detail

GX51: In lichen sulphur survey, which design best tests Explain stabilising, directional and disruptive selection.?

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MCQ

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practice

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Topic

Genetics and ecosystems official content

Question

A. GX51: Use the lichen sulphur survey. Measure colour tolerance scale. Change bark pH reading; record the dependent variable from the data table; hold north-side trunk rule constant. Use random/systematic sampling, representative sample size and bias check. Compare observed and expected values; use critical value, significance and null hypothesis. Correlation means association; correlation does not prove causation. Keep locus-variant evidence separate from allele-frequency model evidence and selection evidence. Evaluate validity, reliability, limitation, conclusion and improvement.
B. GX51: Use casual observations of lichen sulphur survey; omit expected values and ignore sample size. Evaluate validity, reliability, limitation, conclusion and improvement.
C. GX51: Change bark pH reading and north-side trunk rule together, then claim correlation proves causation. Evaluate validity, reliability, limitation, conclusion and improvement.
D. GX51: Discuss Explain stabilising, directional and disruptive selection. without a null hypothesis, controlled variable or bias check. Evaluate validity, reliability, limitation, conclusion and improvement.

Answer

The correct answer is: GX51: Use the lichen sulphur survey. Measure colour tolerance scale. Change bark pH reading; record the dependent variable from the data table; hold north-side trunk rule constant. Use random/systematic sampling, representative sample size and bias check. Compare observed and expected values; use critical value, significance and null hypothesis. Correlation means association; correlation does not prove causation. Keep locus-variant evidence separate from allele-frequency model evidence and selection evidence. Evaluate validity, reliability, limitation, conclusion and improvement.

Explanation

GX51: The correct option is supported by colour tolerance scale, bark pH reading, controlled north-side trunk rule, representative sampling, observed and expected values, and a cautious correlation judgement. Evaluate validity, reliability, limitation, conclusion and improvement.

Common mistake

Evolution may lead to speciation common mistake 1

Giving a vague answer instead of directly addressing: Explain stabilising, directional and disruptive selection..

Answer by clearly explaining how to explain stabilising, directional and disruptive selection..

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