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Genic balance theory of sex determination was proposed by

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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 30
A medical technician while observing a human blood smear under the microscope notes the presence of Barr body close to the nuclear membrane in the WBC. This indicates that person under investigation is
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 31

The following figure refer to the chromosome complement of each sex of fruit fly

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By which number is a Y chromosome labelled

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 32
Genetic identity of human male is determined by
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 33

If somatic cells of a human male contain single barrbody, the genetic composition of the person would be

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The genotype of a boy having sexual characters of a girl is

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 34

If somatic cells of a human male contain single barr body, the genetic composition of the person would be

Or

The genotype of a boy having sexual characters of a girl is

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 35
Chromosome theory of sex determination was propounded by
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 36
Identify the wrong statement
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 37
Random genetic drift in a population probably results from