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. A human male produces sperms with the genotypes AB, Ab, aB, and ab pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person?








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    Correct Option: D


  1. Inheritances of skin colour in humans is an example of








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    Inheritance of skin colour in human is controlled by three genes, A B and C which is polygenic inheritance.

    Correct Option: B

    Inheritance of skin colour in human is controlled by three genes, A B and C which is polygenic inheritance.

  1. In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in F1 generation?








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    Let GG ⇒ homozygous yellow seed plant.
    Gg ⇒ heterozygous green
    gg ⇒ homozygous green
    According to the question:

    So, the ratio will be 50: 50

    Correct Option: D

    Let GG ⇒ homozygous yellow seed plant.
    Gg ⇒ heterozygous green
    gg ⇒ homozygous green
    According to the question:

    So, the ratio will be 50: 50

  1. Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are hybridized, the F2 segregation will show








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    When the linked genes are situated quite close, the chances of crossing over are highly reduced. Due to this, large number of parental gametes are formed and only few recombinant gametes are formed. This results in higher number of parental types in F2 generation as compared to recombinants.

    Correct Option: C

    When the linked genes are situated quite close, the chances of crossing over are highly reduced. Due to this, large number of parental gametes are formed and only few recombinant gametes are formed. This results in higher number of parental types in F2 generation as compared to recombinants.

  1. A common test to find the genotype of a hybrid is by








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    crossing of one F1 progeny with male parent. e.g

    To find the genotype of hybrid test cross is done.

    Correct Option: C

    crossing of one F1 progeny with male parent. e.g

    To find the genotype of hybrid test cross is done.