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 cross between pure tall Pea plant with green pods and dwarf Pea plant with yellow pods will produce short F2 plants out of 16








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    The two factors of each trait arrange or assort at random and are independent of each other in their distribution into the gametes and in the progeny.

    Tall (T) - 12; Dwarf (D) - 4

    Correct Option: C

    The two factors of each trait arrange or assort at random and are independent of each other in their distribution into the gametes and in the progeny.

    Tall (T) - 12; Dwarf (D) - 4

  1. In a dihybrid cross AABB × aabb, F2 progeny of AABB, AABb, AaBB and AaBb occurs in the ratio of








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    Genotype is the genetic make up of an organism. The given 4 genotypes are present in 1: 2: 2: 4 ratio.

    Correct Option: D

    Genotype is the genetic make up of an organism. The given 4 genotypes are present in 1: 2: 2: 4 ratio.

  1. When two genetic loci produce identical phenotypes in cis and trans position, they are considered to be








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    The pseudoalleles are two genetic loci producing identical phenotypes in cis as well as trans position.

    Correct Option: A

    The pseudoalleles are two genetic loci producing identical phenotypes in cis as well as trans position.

  1. Alleles that produce independent effects in their heterozygous condition are called








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    Epistasis is the suppression of the normal phenotypic expression of the gene by a non-allelic gene. Complimentary genes are two independent genes present on different gene loci which assist each other in expressing a trait. Supplementary genes are two independent genes present on different gene loci, each of which may produce its own trait and interact when present together in dominant state to produce a new trait.

    Correct Option: A

    Epistasis is the suppression of the normal phenotypic expression of the gene by a non-allelic gene. Complimentary genes are two independent genes present on different gene loci which assist each other in expressing a trait. Supplementary genes are two independent genes present on different gene loci, each of which may produce its own trait and interact when present together in dominant state to produce a new trait.

  1. After crossing between two plants, the progenies are found to be male-sterile. This phenomenon is found to be maternally inherited and is due to some genes which are present in








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    Male sterlity occur due to cytoplasmic or cytoplasmic- genenic inheritance, i.e., due to DNA present in mitochondrion or chloroplast under the i.e. control of extra-nuclear gene.

    Correct Option: D

    Male sterlity occur due to cytoplasmic or cytoplasmic- genenic inheritance, i.e., due to DNA present in mitochondrion or chloroplast under the i.e. control of extra-nuclear gene.