Molecular Basis of Inheritance MCQs | NCERT Biology

Read the book NCERT Biology class-12 (chapter- 5): Molecular Basis of Inheritance from here.

1. Question

DNA-dependent DNA polymerase:

Select the correct statement:

What is the role of RNA polymerase II in the process of transcription in eukaryotes?

Assuming Human genome as 3 × 10⁹ bp. In how many base sequences would there be differences?

The figure below shows three steps (A, B, C) of translation identification together with what it represent :-

Match the column I with column II :-

Assertion : The development & differentiation of embryo into adult organisms are the result of coordinated regulation of expression of several sets of genes.
Reason: The expression of all genes are not required simultaneously during development of organism.

Transferring of separated DNA fragments to synthetic membranes, such as nitrocellulose or nylon, is called :-

How many types of pyrimidine Nitrogenus –bases are found in a m-RNA :

Adenine + Ribose + Phosphate form :

 In E. coli, during lactose metabolism, in absence of inducer, repressor protein binds to :

If a sample of B-DNA containes 100000 Nucleosome then what is the length of B-DNA sample :

 If the sequence of m-RNA is
        AUGUUUCUUAUUAUAUCU

Then what is the sequence of amino acid in polypeptide chain :

Select the correct option for the given diagram:

The process of translation is:

All of the following are part of an operon except:

Statement -I: In prokaryotes, control of the rate of transcriptional initiation is the predominant site for control of gene expression.
Statement-II: Regulation of lac operon by repressor is referred to as positive regulation.

Very similar experiments involving use of radioactive thymidine to detect distribution of newly synthesised DNA in the chromosomes was performed on Vicia faba by______ :

Select the correct option for the given diagram:

Given below are two statements:
Statement  I: The human genome project was a 13-year project coordinated by the U.S. Department of energy and the National Institute of Health.
Statement II : The chromosome 1 has most genes (2968) and the Y has the fewest (231)

Choose the correct answer from the option given below:

 Given below are two statements:
 Statement  I: The packaging of chromatin at higher level requires additional set of proteins that collectively are referred to as non-histone chromosomal proteins.
 Statement II: Digestion with DNase did inhibit transformation, suggesting that the DNA caused the transformation.

Choose the correct answer from the option given below.

Select the correct statement for the given diagram:

 a. Related with hershey and Chase
 b. Related with E. coli
 c. It is represents semiconservative replication
 d. Heavy isotope used

Given below are two statements
Statement I: Deletions and insertions of base pairs of DNA, causes frame - shift mutations.
Statement II: In honey bee the number of chromosome in queen and worker are same.

Choose the correct answer from the option given below:

Two strands of DNA in double helix model are held together by:

Select the correct match