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Molecular Basis Of Inheritance

394 Questions Start Allen Test
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Q251 Allen Molecular Basis of Inheritance MCQ
Expressed Sequence Tags (ESTs) refers to
A.
All genes that are expressed as proteins.
B.
All genes whether expressed or unexpressed.
C.
Certain important expressed genes.
D.
All genes that are expressed as RNA.
Q252 Allen Molecular Basis of Inheritance MCQ
How many different proteins does the ribosome consist of?
A.
60
B.
40
C.
20
D.
80
Q253 Allen Molecular Basis of Inheritance Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)Gene 'a'
(b)Gene 'y'
(c)Gene 'i'
(d)Gene 'z'
(i)Ī²-galactosidase
(ii)Transacetylase
(iii)Permease
(iv)Repressor protein
A.
a-ii, b-iii,c-iv,d-i
B.
a-iii,b-iv,c-i, d-ii
C.
a-iii,b-i, c-iv,d-ii
D.
a-ii, b-i, c-iv,d-iii
Q254 Allen Molecular Basis of Inheritance MCQ
Given below are two statements: Statement I: RNA mutates at a faster rate. Statement II : Viruses having RNA genome and shorter life span mutate and evolve faster. In the light of the above statements, choose the correct answer from the options given below :
A.
Both Statement I and II are false.
B.
Statement I is true but Statement Il is false.
C.
Statement I false but Statement II is true.
D.
Both Statement I and Il are true
Q255 Allen Molecular Basis of Inheritance MCQ
Give below are two statements. Statement-I : In prokaryotes, the positively charged DNA is held with some negatively charged proteins in a region called nucleoid. Statement-Il : In eukaryotes, the negatively charged DNA is wrapped around the positively charged histone octamer to form nucleosome. In the light of the above statements, choose the correct answer from the options given below :
A.
Both Statement I and Statement Il are false.
B.
Statement I is correct but Statement II is false.
C.
Statement I incorrect but Statement II is true.
D.
Both Statement I and Statement II are true.
Q256 Allen Molecular Basis of Inheritance MCQ
Which one of the following is the sequence on corresponding coding strand, if the sequence on mRNA formed is as follows 5' AUCGAUCGAUCGAUCGAUCGAUCG AUCG 3'?
A.
3' UAGCUAGCUAGCUAGCUA GCUAGCUAGC 5'
B.
5' ATCGATCGATCGATCGATCG ATCGATCG 3'
C.
3' ATCGATCGATCGATCGATCG ATCGATCG 5'
D.
5' UAGCUAGCUAGCUAGCUAGC UAGCUAGC 3'
Q257 Allen Molecular Basis of Inheritance MCQ
The last chromosome sequenced in Human Genome Project was :-
A.
Chromosome 6
B.
Chromosome 1
C.
Chromosome 22
D.
Chromosome 14
Q258 Allen Molecular Basis of Inheritance MCQ
Name the component that binds to the operator region of an operon and prevents RNA polymerase from transcribing the operon.
A.
Promotor
B.
Regulator protein
C.
Repressor protein
D.
Inducer
Q259 Allen Molecular Basis of Inheritance MCQ
Given below are two statements : Statement-I: The process of copying genetic information from one strand of the DNA into RNA is termed as transcription. Statement-II: A transcription unit in DNA is defined primarily by the three regions in the DNA i.e., a promoter, the structural gene and a terminator. In the light of the above statements, choose the correct answer from the options given below :
A.
Statement I is true but Statement II is false
B.
Statement I is false but Statement II is true
C.
Both Statement I and II are true
D.
Both Statement I and Il are false
Q260 Allen Molecular Basis of Inheritance MCQ
Which scientist conducted an experiment with Ā³Ā²P and Ā³āµS labelled phages for demonstrating that DNA is the genetic material?
A.
James D. Watson and F.H.C. Crick
B.
A.D. Hershey and M.J. Chase
C.
F. Griffith
D.
O.T. Avery, C.M. MacLeod and M. McCarty
Q261 Allen Molecular Basis of Inheritance MCQ
Statement-I: RNA being unstable, mutate at a faster rate. Statement-II: RNA can directly code for synthesis of proteins hence can easily express the characters. In the light of the above statements, choose the correct answer from the options given below:
A.
Statement I is true but Statement II is false
B.
Statement I is false but Statement II is true
C.
Both Statement I and Statement II are true
D.
Both Statement I and Statement II are false
Q262 Allen Molecular Basis of Inheritance MCQ
Select the correct statements about sickle cell anaemia.
(A) There is a change in gene for beta globin.
(B) In the beta globin, there is valine in the place of Lysine.
(C) It is an example of point mutation.
(D) In the normal gene U is replaced by A.
A.
(B), (C) and (D) only
B.
(B) and (D) only
C.
(A), (B) and (D) only
D.
(A) and (C) only
Q263 Allen Molecular Basis of Inheritance MCQ
Which one of the following acts as an inducer for lac operon?
A.
Sucrose
B.
Lactose
C.
Glucose
D.
Galactose
Q264 Allen Molecular Basis of Inheritance MCQ
With reference to Hershey and Chase experiments, select the correct statements.
(A) Viruses grown in the presence of radioactive phosphorus contained radioactive DNA.
(B) Viruses grown on radioactive sulphur contained radioactive proteins.
(C) Viruses grown on radioactive phosphorus contained radioactive protein.
(D) Viruses grown on radioactive sulphur contained radioactive DNA.
(E) Viruses grown on radioactive protein contained radioactive DNA.
Choose the most appropriate answer from the options given below:
A.
(D) and (E) only
B.
(A) and (B) only
C.
(A) and (C) only
D.
(B) and (D) only
Q265 Allen Molecular Basis of Inheritance MCQ
The salient features of genetic code are:
(A) The code is palindromic.
(B) UGA acts as initiator codon.
(C) The code is unambiguous and specific.
(D) The code is nearly universal.
Choose the most appropriate answer from the options given below:
A.
(A) and (D) only
B.
(B) and (C) only
C.
(A) and (B) only
D.
(C) and (D) only
Q266 Allen Molecular Basis of Inheritance MCQ
The lactose present in the growth medium of bacteria is transported to the cell by the action of :-
A.
Beta-galactosidase
B.
Acetylase
C.
Permease
D.
Polymerase
Q267 Allen Molecular Basis of Inheritance MCQ
A transcription unit in DNA is defined primarily by the three regions in DNA and these are with respect to upstream and down stream end;
A.
Repressor, Operator gene, Structural gene
B.
Structural gene, Transposons, Operator gene
C.
Inducer, Repressor, Structural gene
D.
Promotor, Structural gene, Terminator
Q268 Allen Molecular Basis of Inheritance Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)Frederick Griffith
(b)FranƧois Jacob & Jacques Monod
(c)Har Gobind Khorana
(d)Meselson & Stahl
(i)Genetic code
(ii)Semi-conservative mode of DNA replication
(iii)Transformation
(iv)Lac operon
A.
a-iii, b-ii, c-i, d-iv
B.
a-iii, b-iv, c-i, d-ii
C.
a-ii, b-iii, c-iv, d-i
D.
a-iv, b-i, c-ii, d-iii
Q269 Allen Molecular Basis of Inheritance MCQ
Which of the following statement is correct regarding the process of replication in E.coli?
A.
The DNA dependent DNA polymerase catalyses polymerization in one direction that is 3' ā†’ 5'
B.
The DNA dependent RNA polymerase catalyses polymerization in one direction, that is 5' ā†’ 3'
C.
The DNA dependent DNA polymerase catalyses polymerization in 5' ā†’ 3' as well as 3' ā†’ 5' direction
D.
The DNA dependent DNA polymerase catalyses polymerization in 5' ā†’ 3' direction.
Q270 Allen Molecular Basis of Inheritance MCQ
Which one is the correct product of DNA dependent RNA polymerase to the given template ? 3'TACATGGCAAATATCCATTCA5'
A.
5'AUGUACCGUUUAUAGGUAAGU3'
B.
5'AUGUAAAGUUUAUAGGUAAGU3'
C.
5'AUGUACCGUUUAUAGGGAAGU3'
D.
5'ATGTACCGTTTATAGGTAAGT3'
Q271 Allen Molecular Basis of Inheritance Match the Columns
Match Column-I with Column-II.
Column-IColumn-II
(a)RNA polymerase III
(b)Termination of transcription
(c)Splicing of exons
(d)TATA box
(i)snRNPs
(ii)Promotor
(iii)Rho factor
(iv)snRNAs, tRNA
A.
a-ii, b-iv, c-i, d-iii
B.
a-iii,b-ii, c-iv,d-i
C.
a-iii,b-iv, c-i, d-ii
D.
a-iv, b-iii,c-i, d-ii
Q272 Allen Molecular Basis of Inheritance MCQ
In a chromosome, there is a specific DNA sequence responsible for initiating replication. It is called as :-
A.
recognition sequence
B.
cloning site
C.
restriction site
D.
ori site
Q273 Allen Molecular Basis of Inheritance MCQ
Given below are two statements regarding RNA polymerase in prokaryotes. Statement-I: In prokaryotes, RNA polymerase is capable of catalysing the process of elongation during transcription. Statement-II: RNA polymerase associate transiently with 'Rho' factor to initiate transcription. In the light of the above statements, choose the correct answer from the options given below :-
A.
Statement I is true but Statement Il is false
B.
Statement I is false but Statement Il is true
C.
Both Statement I and Statement Il are true
D.
Both Statement I and Statement Il are false
Q274 Allen Molecular Basis of Inheritance MCQ
Which of the following is a nucleotide ?
A.
Uridine
B.
Adenylic acid
C.
Guanine
D.
Guanosine
Q275 Allen Molecular Basis of Inheritance MCQ
Statement I: In eukaryotes there are three RNA polymerases in the nucleus in addition to the RNA polymerase found in the organelles. Statement-II: AlI the three RNA polymerases in eukaryotic nucleus have different roles. In the light of the above statements, choose the correct answer from the options given below:-
A.
Statement l is true but Statement Il is false
B.
Statement I is false but Statement Il is true
C.
Both Statement I and Statement Il are true
D.
Both Statement I and Statement Il are false