Chemical basis of heredity is?
DNA
RNA
Histones
None
Related Questions
A molecule that can act as a genetic material must fulfill the traits given, except
it should provide the scope for slow changes that are required for evolution
it should be able to express itself in the form of ‘Mendelian characters’
it should be able to generate its replica
it should be unstable structurally and chemically
SS DNA is present in?
TMV
Polio Virus
Pox Virus
bacteriophage
Which of the following enzymes is NOT directly involved in DNA replication?
DNA polymerase
Helicase
Primase
RNA polymerase
Out of A-T, G-C pairing, bases of DNA may exist in alternate valency state owing to arrangements called
Tautomerisational mutation
Analogue substitution
Point mutation
Frameshift mutation
Which one of the following statements is incorrect about the properties of DNA?
DNA is a double helix.
Adenine pairs with Thymine, and Guanine pairs with Cytosine.
DNA has a sugar-phosphate backbone.
DNA is always linear.
The bond that links adjacent nucleotides in a DNA strand is called a:
Peptide bond
Glycosidic bond
Hydrogen bond
Phosphodiester bond
If a molecule is to function as hereditary material, it must NOT be:
Able to undergo mutations
Chemically stable
Capable of replication
Structurally complex and irregular
Statement 1: Adenine cannot pair with cytosine
Statement 2: Adenine and cytosine do not have a perfect match between hydrogen donor and hydrogen acceptor sites. Hence, they cannot pair
Statement 1 is True; Statement 2 is True; Statement 2 is correct explanation for Statement 1
Statement 1 is True; Statement 2 is True; Statement 2 is not correct explanation for Statement 1
Statement 1 is True, Statement 2 is False
Statement 1 is False, Statement 2 is True
Which of the following is not relevant to the structure of double helical DNA?
Deoxyribose sugar
Nitrogenous bases
Hydrogen bonds
Ribose sugar
The human genome is approximately 3 billion base pairs long. If the average distance between base pairs is 0.34 nm, what is the approximate length of the human genome in meters?
1.02 meters
0.34 meters
3.34 meters
2.04 meters
