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Lack of independent assortment between two genes A and B would be due to

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Important Questions on Principles of Inheritance and Variation

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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 47
Recessive gene present on one X - chromosome of humans will be
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 48
Genotype of hybrid is known by crossing
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 49
In pea, yellow seed colour is dominant over green colour. Heterozygous yellow seeded plant is crossed with green seeded plant. The ratio of yellow &  green seeded offspring will be:
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 50
A human male produce diallelic sperms in equal proportion AB, Ab, aB and ab. The genotype of the person would be
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 51
Which one of the following conditions in humans is correctly matched with its chromosomal abnormality/linkage?
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 52
Point mutation involves
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 53
The most popularly known blood grouping is the ABO grouping. It is named ABO and not ABC, because ''O''   in it refers to having:
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Alpha Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>Exercise-3>Q 54

Study the pedigree chart given below

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What does it show?