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The karyotype given below is related to

 

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Important Questions on Principles of Inheritance and Variation

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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 17
A mother in a family of five daughters is expecting her sixth baby. The chance of its being a son is ___.
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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 19
A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease, but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease?
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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 22
Mrs. verma has a autosomal gene pair 'Bb' and she contain x-linked gene 'd' both on of her x-chromosome. What is the percentage of gamete which contain 'bd' genes :-
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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 26
If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is :-
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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 27
A man whose father was colour blind marries a woman who had a colour blind mother and normal father. What percentage of male children of this couple will be colour blind?
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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 29

Study the two cases carefully. What would be the correct interpretation of the two cases?

Case Mother Father Children
Case I With disease Normal Sons always with diseases
Case II With disease Normal Sons and daughters could show disease

 

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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 30

A pedigree is shown below for a disease that is autosomal dominant. What would be the genetic make up of the first generation?

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Biology Crash Course NEET>Chapter 27 - Principles of Inheritance and Variation>Level 3>Q 31
In humans, attached earlobes are a dominant feature over free earlobes while hypertrichosis of the ear is a holandric (Y-linked) feature. A man with attached earlobes and extensive hair on pinna married a woman having free earlobes. The couple had one son with attached earlobes and hairy pinna, another son with free earlobes and hairy pinna and two daughters with attached earlobes. One of the daughters married a man with free earlobes and sparse hair on pinna. They had two sons. What would be the characteristics of their pinnae?