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. Alleles are








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    Alleles are defined as alternative form of same gene.

    Correct Option: B

    Alleles are defined as alternative form of same gene.

  1. Which is the most common mechanism of genetic variation in the population of sexually reproducing organism?








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    The most common cause of variations is recombination in the organism which are reproduced by sexual way.

    Correct Option: C

    The most common cause of variations is recombination in the organism which are reproduced by sexual way.

  1. How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?








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    Seven pairs of contrasting characters were selected in pea plant and studied by Mendel in his experiment.

    Correct Option: C

    Seven pairs of contrasting characters were selected in pea plant and studied by Mendel in his experiment.

  1. A cell at telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell is containing more number of chromosomes as compared to other dividing cells. This would result in








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    This phenomenon is known as polyploidy, wherein the cells contain more than two paired (homologous) sets of chromosomes. Polyploidy is often seen in the case of plants. The major cause of polyploidy is the non - disjunction of sister chromatids during meiotic recombination. This condition is actually useful in development of new crop varieties.

    Correct Option: B

    This phenomenon is known as polyploidy, wherein the cells contain more than two paired (homologous) sets of chromosomes. Polyploidy is often seen in the case of plants. The major cause of polyploidy is the non - disjunction of sister chromatids during meiotic recombination. This condition is actually useful in development of new crop varieties.

  1. In a testcross involving F1 dihybrid flies, more parental-type offspring were produced than the recombinant-type offspring. This indicates








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    When two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations are much higher than the non-parental or recombinant type. This is also called incomplete linkage.

    Correct Option: C

    When two genes in a dihybrid cross are situated on the same chromosome, the proportion of parental gene combinations are much higher than the non-parental or recombinant type. This is also called incomplete linkage.