Genetics


 
 
Concept Explanation
 

Genetics

Genetics

The study of the pattern of transmission of characters from parents to their offspring is called genetics.

  • Genes are the basic physical and functional units of heredity. In humans, genes vary in size from a few hundred DNA bases to more than two million bases. There are present two set of genes in each individual.
  • Both father and mother pass on genes, inherited from their own parents, to their children.
  • Genes are stretches of DNA containing coded information for making proteins. These are found on the chromosomes of cells.
  •  The genetic constitution of an individual organism is called its genotype.
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    Sample Questions
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    Question : 1

    Which of the following are correct ?

    (a) The study of the pattern of transmission of characters from parents to their offspring is called genetics.

    (b) Genes are found on the chromosomes of cells.

    (c) The genotype determines the characteristic features of an individual which are slowly expressed during development.

    Right Option : D
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    Question : 2

    Chromosome is a rod- like strand made up of ________________

    Right Option : A
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    Question : 3

    Which of the following are correct ?

    (a) Genes are the basic physical and functional units of heredity. 

    (b) Both father and mother pass on genes, inherited from their own parents to their children.

    Right Option : C
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