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Principles of Inheritance and Variation

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Advanced Botany

Plant Growth and Development
Organisms and Populations
Ecosystem
Biodiversity and Conservation
Environmental Issues
Microbes in Human Welfare
Strategies for Enhancement in Food Production
Molecular Basis of Inheritance
Principles of Inheritance and Variation
Sexual Reproduction in Flowering Plants
Reproduction in Organisms
The Living World
Respiration in Plants
Photosynthesis
Mineral Nutrition
Transport in Plants
Cell Cycle and Cell Division
Cell-The Unit of Life
Anatomy of Flowering Plants
Morphology of Flowering Plants
Plant Kingdom
Biological Classification
  1. An abnormal human baby with ‘XXX’ sex chromosomes was born due to:
    1. formation of abnormal ova in the mother
    2. fusion of two ova and one sperm
    3. fusion of two sperms and one ovum
    4. formation of abnormal sperms in the father
Correct Option: A

A human baby having abnormality with ‘XXX’ sex chromosomes is born due to evolution of abnormal ova in mother’s ovary. This is caused due to non-disjunction of X chromosome in the mother.


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