Assertion :Total appearance of an organism is determined by interaction during development between its genetic constitution and the environment. Reason: Different phenotypes may result from identical genotypes.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
Overall appearance of an organism is the result of the interaction during development between its genetic constitution and the environment as different phenotypes and appearances in individuals with same genotype may arise because of different environmental effects.

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