Molecular Basis of Inheritance

Molecular Basis of Inheritance

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. Read the following four statements (A-D).
    (A) In transcription, adenosine pairs with uracil.
    (B) Regulation of lac operon by repressor is referred to as positive regulation.
    (C) The human genome has approximately 50,000 genes.
    (D) Haemophilia is a sex-linked recessive disease.
    How many of the above statements are correct?








  1. View Hint View Answer Discuss in Forum

    Statement A & D is correct Regulation of lac operon by repressor is referred as negative regulation. In negative regulation, a repressor molecule binds to the operator of an operon and terminates transcription. In positive regulation, an activator interacts with the RNA polymerase in the promoter region to initiate transcription. Human genome contains some 20,000- 25,000 genes billion bases.

    Correct Option: A

    Statement A & D is correct Regulation of lac operon by repressor is referred as negative regulation. In negative regulation, a repressor molecule binds to the operator of an operon and terminates transcription. In positive regulation, an activator interacts with the RNA polymerase in the promoter region to initiate transcription. Human genome contains some 20,000- 25,000 genes billion bases.

  1. Removal of introns and joining of exons in a defined order during transcription is called:








  1. View Hint View Answer Discuss in Forum

    Remonal of introns by spliceosome in hnRNA and joining of exons by DNA liagse in a defined order during transcription is called splicing.

    Correct Option: D

    Remonal of introns by spliceosome in hnRNA and joining of exons by DNA liagse in a defined order during transcription is called splicing.

  1. Which one of the following is not a part of a transcription unit in DNA?








  1. View Hint View Answer Discuss in Forum

    Transcription unit consists of promoter, structural gene & terminator.

    Correct Option: A

    Transcription unit consists of promoter, structural gene & terminator.

  1. Removal of RNA polymerase III from nucleoplasm will affect the synthesis of:








  1. View Hint View Answer Discuss in Forum

    Removal of RNA polymerase III from nucleoplasm will affect the synthesis of tRNA while RNA polymerase I forms r-RNA and RNA polymerase II form m-RNA is Eukaryotes.

    Correct Option: A

    Removal of RNA polymerase III from nucleoplasm will affect the synthesis of tRNA while RNA polymerase I forms r-RNA and RNA polymerase II form m-RNA is Eukaryotes.


  1. The figure gives an important concept in the genetic implication of DNA. Fill the blanks A, B and C.








  1. View Hint View Answer Discuss in Forum

    In this question A is Franis Crick, B is translation and C is transcription. It is unidirectional flow of information DNA to mRNA (transcription) and then decoding the information present in mRNA in the formation of polypeptide chain or protein (translation).

    Correct Option: A

    In this question A is Franis Crick, B is translation and C is transcription. It is unidirectional flow of information DNA to mRNA (transcription) and then decoding the information present in mRNA in the formation of polypeptide chain or protein (translation).