Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
DNA replication is (a) conservative and discontinuous. (b) semi-conservative and semi-discontinuous. (c) semi-conservative and discontinuous. (d) conservative.
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
A bacterium grown over medium having radioactive 35S incorporates radioactivity in (a) carbohydrates (b) proteins (c) DNA (d) RNA
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
The scientists involved in discovery of DNA as chemical basis of heredity were (a) Hershey and Chase (b) Griffith and Avery (c) Avery, Mac Leod and McCarty (d) Watson and Crick
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Information flow or central dogma of modern biology is (a) RNA ® Proteins ® DNA (b) DNA ® RNA ® RNA (c) RNA ® DNA ® Proteins (d) DNA ® RNA ® Proteins
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
DNA template sequence of CTGATAGC is transcribed over mRNA as (a) GUCTUTCG (b) GACUAUCG (c) GAUTATUG (d) UACTATCU
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Match the following: Column I Column II A. lactose permease I. Z gene B. Galactoside- II. Y gene transacetylase C. Peptidyl transferase III. A gene D. b-Galactosidase (a) D-I, A-I, B-III (b) A-II, B-III, C-I (c) A-II, B-I, D-III (d) A-III, B-II, C-I
![Which is the "Only enzyme" that has "Capability" to catalyse Initiation, Elongation and Termination in the process of transcription in prokaryotes ? (1) DNA dependent DNA polymerase (2) DNA dependent RNA polymerase (3) DNA Ligase (4) DNase [ NEET 2021 ]](https://blogger.googleusercontent.com/img/a/AVvXsEgJt3srx4AKgQLWz4RNlzYWCiPhVwO_Gj9tz6ylb01WGRN_I2k-n7oI7duH1MBg6pOm7jVEmf3ImOsDaeDZrmPRwOx5X0TeV1FxZYDj9NQl8aI2L-Ynoaf9TUuYY3uS4FbnjA9ba3mzKk99W1MIaClol9I06K-aMZxNMd-WyPAfMxo-OVaQnk8FBiVDBA=w74-h74-p-k-no-nu)
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Histone octamer contains (a)Eight types of histones (b)Eight histones of four different types (c)Five histones (d)Six types of histones
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Which one out of A – D given below correctly represents the structural formula of the basic amino acid?
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Match column-I with column-II Column-I Column-II A. Operator site I. Binding site for RNA polymerase B. Promoter site II. Binding site for repressor molecule C. Structural gene III. Codes for enzyme protein D. Regulator gene IV. Codes for repressor molecules
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
How many different kinds of gametes will be produced by a plant having the genotype AABbCC ? (a) Four(b) Nine (c) Two(d) Three
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Select the two statements out of the four (A - D) given below about lac operon. (A) Glucose or galactose may bind with the repressor and inactivate it (B) In the absence of lactose, the repressor binds with the operator region (C) The z-gene codes for permease (D) This was elucidated by Francois Jacob and Jacques Monod The correct statements are 1. (B) and (C) 2. (A) and (C) 3. (B) and (D) 4. (A) and (B)
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Select the correct match: 1. Alec Jeffreys – Streptococcus pneumoniae 2. Alfred Hershey and Martha Chase – TMV 3. Matthew Meselson and F. Stahl – Pisum sativum 4. Francois Jacob and Jacques Monod – Lac operon
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Amino acid sequence, in protein synthesis is decided by the sequence of (1) t-RNA (2) m-RNA (3) c-DNA (4) r-RNA
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
A molecule that can act as a genetic material must fulfill the traits given below, except (1) it should be able to express itself in the form of 'Mendelian characters' (2) it should be able to generate its replica (3) it should be unstable structurally and chemically (4) it should provide the scope for slow changes that are required for evoltion
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
In the polynucleotide chain of DNA, a nitrogenous base is linked to the –OH of: 1. 2'C pentose sugar 2. 3'C pentose sugar 3. 5'C pentose sugar 4. 1'C pentose sugar
Class 12 | Biology | chapter 6 | Molecular Basis of Inheritance
Which one of the following pairs of nitrogenous bases of nucleic acids is wrongly matched with the category mentioned against it? 1. Thymine, Uracil - Pyrimidines 2. Uracil, Cytosine - Pyrimidines 3. Guanine, Adenine - Purines 4. Adenine, Thymine - Purines
