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Principles of Inheritance and Variation Easy Questions and Answers | Page - 3

Principles of Inheritance and Variation

Principles of Inheritance and Variation

Easy Questions

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. Molecular weight of chromosome of yeast cell is








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    Molecular weight of chromosome of yeast cell is 2.56 × 109.

    Correct Option: A

    Molecular weight of chromosome of yeast cell is 2.56 × 109.

  1. Which character studied by Mendel in garden pea (Pisum sativum) was dominant








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    Round seed shape is dominant over wrinkled. Yellow seed colour is dominant over green seed colour Axial flower position is dominant over terminal.

    Correct Option: B

    Round seed shape is dominant over wrinkled. Yellow seed colour is dominant over green seed colour Axial flower position is dominant over terminal.

  1. Which one pair of the following parents is most likely to get a child who suffer from hemolytic disease of new born?








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    Hemolytic disease of the newborn occurs when a Rh- mother conceives a Rh+ child. Mother’s blood starts producing antibodies against the foetal red blood cells.

    Correct Option: A

    Hemolytic disease of the newborn occurs when a Rh- mother conceives a Rh+ child. Mother’s blood starts producing antibodies against the foetal red blood cells.

  1. A gene is said to be dominant if








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    A dominant gene would lead to the expression of its phenotype irrespective of the fact whether its allelic gene is dominant or recessive.

    Correct Option: C

    A dominant gene would lead to the expression of its phenotype irrespective of the fact whether its allelic gene is dominant or recessive.

  1. The linkage map of X-chromosome of fruit fly has 66 units, with yellow body gene (y) at one end and bobbed hair
    (b) gene at the other end. The recombination frequency between these two genes (y and b) should be








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    Mapping of genes on chromosomes is based on the assumption that genes are arranged on the chromosome and that the percentage of crossing over (recombination frequency) between two genes is an index of their distance apart. Distances between genes is expressed as map units, where one map unit is defined as 1 per cent recombination.

    Correct Option: B

    Mapping of genes on chromosomes is based on the assumption that genes are arranged on the chromosome and that the percentage of crossing over (recombination frequency) between two genes is an index of their distance apart. Distances between genes is expressed as map units, where one map unit is defined as 1 per cent recombination.