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Which is the most common mechanism of genetic variation in the population of sexually-reproducing organism?

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Important Questions on Principles of Inheritance and Variation

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 10
To be evolutionarily successful, a mutation must be in:
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 11
Which of the chromosomal formulations is responsible for the expression of meta-male character in Drosophila?
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 12
Sickle-cell anaemia is
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 13
Alzheimer disease in humans is associated with the deficiency of
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 14
Industrial melanism as observed in peppered moth proves that
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 20
The monosomic condition in human beings depicted as XO is referred to as
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 23
Which of the following disorder is not hereditary?
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 24
Disorders of amino acid metabolism results in