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Molecular Basis Of Inheritance

394 Questions Start Allen Test
All Exams Allen
Q176 Allen DNA FINGERPRINTING, HUMAN GENOME PROJECT MCQ
Which step is not correct in DNA finger printing ?
A.
Isolation of DNA
B.
Digestion of DNA by DNA ligase enzyme
C.
Separation of DNA by electrophoresis
D.
Hybridisation using labelled VNTR probe
Q177 Allen DNA FINGERPRINTING, HUMAN GENOME PROJECT MCQ
DNA fingerprinting method is very useful for:
A.
DNA tests for identity & relationships
B.
Forensic studies
C.
Polymorphism studies
D.
All of the above
Q178 Allen (Previous Year Questions) MCQ
Commonly used vectors for human genome sequencing are :-
A.
T-DNA
B.
BAC and YAC
C.
Expression Vectors
D.
T/A Cloning Vectors
Q179 Allen (Previous Year Questions) MCQ
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 :-
A.
G 17%, A 16.5%, T 32.5%
B.
G 17%, A 33%, T 33%
C.
G 8.5%, A 50%, T 24.5%
D.
G 34%, A 24.5%, T 24.5%
Q180 Allen (Previous Year Questions) MCQ
Gene regulation governing lactose operon of E.coli that involves the lac I gene product is :-
A.
Negative and inducible because repressor protein prevents transcription
B.
Negative and repressible because repressor protein prevents transcription
C.
Feedback inhibition because excess of Ī²-galactosidasecanswitchoff transcription
D.
Positive and inducible because it can be induced by lactose BMI209
Q181 Allen (Previous Year Questions) MCQ
The movement of a gene from one linkage group to another is called :-
A.
Duplication
B.
Translocation
C.
Crossing over
D.
Inversion
Q182 Allen (Previous Year Questions) MCQ
Which of the following biomolecules does have a phosphodiester bond?
A.
Nucleic acids in a nucleotide
B.
Fatty acids in a diglyceride
C.
Monosaccharides in a polysaccharide
D.
Amino acids in a polypeptide
Q183 Allen (Previous Year Questions) MCQ
Which one of the following is not applicable to RNA?
A.
Chargaff's rule
B.
Complementary base pairing
C.
5' phosphoryl and 3' hydroxyl ends
D.
Heterocyclic nitrogenous bases
Q184 Allen (Previous Year Questions) MCQ
Satellite DNA is important because it :-
A.
Codes for enzymes needed for DNA replication
B.
Codes for proteins needed in cell cycle
C.
Shows high degree of polymorphism in population and also the same degree of polymorphism in an individual, which is heritable from parents to children
D.
Does not code for proteins and is same in all members of the population BMI213
Q185 Allen (Previous Year Questions) MCQ
Identify the correct order of organisation of genetic material from largest to smallest :-
A.
Chromosome, genome, nucleotide, gene
B.
Chromosome, gene, genome, nucleotide
C.
Genome, chromosome, nucleotide, gene
D.
Genome, chromosome, gene, nucleotide BMI214
Q186 Allen (Previous Year Questions) MCQ
Which of the following is required as inducer(s) for the expression of Lac operon?
A.
Glucose
B.
Galactose
C.
Lactose
D.
Lactose and galactose
Q187 Allen (Previous Year Questions) MCQ
A complex of ribosomes attached to a single strand of RNA is known as :-
A.
Polysome
B.
Polymer
C.
Polypeptide
D.
Okazaki fragment
Q188 Allen (Previous Year Questions) MCQ
Which of the following is not required for any of the techniques of DNA fingerprinting available at present?
A.
Polymerase chain reaction
B.
Zinc finger analysis
C.
Restriction enzymes
D.
DNA-DNA hybridization
Q189 Allen (Previous Year Questions) MCQ
Which one of the following is the starter codon?
A.
AUG
B.
UGA
C.
UAA
D.
UAG
Q190 Allen (Previous Year Questions) MCQ
Taylor conducted the experiment to prove semiconservative mode of chromosome replication on : -
A.
Drosophila melanogaster
B.
E. coli
C.
Vinca rosea
D.
Vicia faba
Q191 Allen (Previous Year Questions) MCQ
The equivalent of a structural gene is :-
A.
Operon
B.
Recon
C.
Muton
D.
Cistron
Q192 Allen (Previous Year Questions) MCQ
Which of the following rRNAs acts as structural RNA as well as ribozyme in bacteria?
A.
23 S rRNA
B.
5.8 S rRNA
C.
5 S rRNA
D.
18 S rRNA
Q193 Allen (Previous Year Questions) MCQ
A non-proteinaceous enzyme is :-
A.
Ligase
B.
Deoxyribonuclease
C.
Lysozyme
D.
Ribozyme
Q194 Allen (Previous Year Questions) MCQ
A molecule that can act as a genetic material must fulfil the traits given below, except :-
A.
It should be unstable structurally and chemically
B.
It should provide the scope for slow changes that are required for evolution
C.
It should be able to express itself in the form of 'Mendelian characters'
D.
It should be able to generate its replica BMI223
Q195 Allen (Previous Year Questions) MCQ
DNA-dependent RNA polymerase catalyses transcription on one strand of the DNA which is called the :-
A.
Alpha strand
B.
Antistrand
C.
Template strand
D.
Coding strand
Q196 Allen Molecular Basis of Inheritance MCQ
The mechanism that causes a gene to move from one linkage group to another is called:-
A.
Translocation
B.
Crossing-over
C.
Inversion
D.
Duplication
Q197 Allen Molecular Basis of Inheritance MCQ
The final proof for DNA as the genetic material came from the experiments of :-
A.
Hershey and Chase
B.
Avery, McLeod and McCarty
C.
Hargobind Khorana
D.
Griffith
Q198 Allen Molecular Basis of Inheritance MCQ
DNA fragments are:-
A.
Negatively charged
B.
Neutral
C.
Either positively or negatively charged depending on their size
D.
Positively charged
Q199 Allen Molecular Basis of Inheritance MCQ
If there are 999 bases in an RNA that codes for a protein with 333 amino acids, and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?
A.
11
B.
33
C.
333
D.
1
Q200 Allen Molecular Basis of Inheritance MCQ
During DNA replication, Okazaki fragments are used to elongate:-
A.
The lagging strand towards replication fork.
B.
The leading strand away from replication fork.
C.
The lagging strand away from the replication fork.
D.
The leading strand towards replication fork