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Which one of the following conditions correctly describes the manner of determining the sex in the given example?

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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 20
In our society women are blamed for producing female children. Choose the correct answer for the sexdetermination in humans
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 21
Foetal sex can be determined by examining cells from amniotic fluid looking for
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 22
Chromosomes that determine the male sex in Melandrium plant is
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 23
Male child will be born if
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 24
Barr body in mammals represents.
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 25
Based on Lyon's hypothesis, what will be the number of Barr bodies found in a human female suffering from Down's syndrome
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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 26

Drosophila flies with one half of the body male and other half female is referred to as
Or

Loss of a X chromosome in a particular cell during its development, results into

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NTA Errorless Biology Volume-2>Chapter 5 - Principles of Inheritance and Variation>Ordinary Thinking>Q 27
In human female, barr bodies are formed by