STANDARD Zoology Molecular Basis Of Inheritance Class 12 Questions

Nucleotides are building blocks of nucleic acids. Each nucleotide is a composite molecule formed by

The 5' end of polynucleotide chain is attached to

The double helical model of the DNA was proposed by Watson and Crick based on what data produced by Wilkins and Franklin

In the DNA molecule

DNA consists of two complementary nucleotide chains. If the sequence of nucleotide in one of the chains is AGCTTCGA, then the nucleotide sequence in the other chain shall be

Which of the following is not relevant to the structure of double helical DNA

In sea urchin DNA, which is double stranded, 17% of the bases were shown to be cytosine. The percentages of the other three bases expected to be present in this DNA are

Which enzyme is responsible for linking the fragments of DNA

In Transforming Principle F. Griffith found that mice infected with _____ die from pneumonia infection but mice infected with ______ survived

Match the following

The process by which DNA of nucleus passes genetic information to mRNA

The enzyme reverse transcriptase is

Which of the following statements are correct (i) RNA polymerase I transcribes rRNAs (ii) RNA polymerase II transcribes snRNAs (iii) RNA polymerase III transcribes hnRNA (iv) RNA polymerase II transcribes hnRNA

Which of the following steps in transcription is catalyzed by RNA polymerase?

'Central Dogma' was proposed by

Viruses grown on ______ contained radioactive protein but not radioactive DNA because DNA does not contain sulfur

In DNA molecule, which of the following base pair is present

How many nucleotides are present in one turn of DNA helix

Which one of the following pairs is correctly matched

Examine the following figures and select the right answer in which diagrammatic representation of a nucleotide is correctly shown

The charge on DNA and histones in a nucleosome is ________

First experimental proof of semi conservative mode of replication was shown in

The pitch of the helix is _______ there are roughly _______ in each turn of DNA

Who amongst the following scientists had no contribution in the development of the double helix model for the structure of DNA?