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Why is colony number useful in transformation efficiency calculation?

Answer and explanation

Correct answer: It gives an estimate of transformants

Each visible colony on a selective plate is generally treated as arising from one viable transformed cell or one transformed cell cluster, so counting colonies gives an estimate of successful transformants. Thus, option A is correct. In a simplified calculation, transformation efficiency is related to the number of transformant colonies, adjusted for the volume plated and the amount of DNA used; for example, more colonies from the same DNA amount usually indicate greater efficiency. Controls are needed to check background growth. Colony number does not reveal DNA colour, host taste, or agar smell, so options B, C, and D are irrelevant.

Related tags

Colony NumberTransformation EfficiencyTransformantsCompetent HostPrinciples Of BiotechnologyBiotechnologyClass 11 Mcq

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