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Molecular Basis Of Inheritance

394 Questions Start Allen Test
All Exams Allen
2006 Q1 Allen NCERT BASED QUESTIONS MCQ
The sequence of which chromosome was completed in May 2006?
A.
Chromosome number 1
B.
Chromosome number 2
C.
Chromosome number 5
D.
Chromosome number 10 BMI343
2000 Q2 Allen Molecular Basis of Inheritance MCQ
E.coli has only 4.6 Ɨ 10ā¶ base pairs and completes the process of replication within 18 minutes; then the average rate of polymerisation is approximately: -
A.
2000 base pairs/second
B.
3000 base pairs/second
C.
4000 base pairs/second
D.
1000 base pairs/second
2000 Q3 Allen NCERT BASED QUESTIONS MCQ
What is the rate of polymerisation in E. coli?
A.
20,000 bp per second
B.
2000 nucleotides per second
C.
2000 bp per minute
D.
2000 bp per second
2000 Q4 Allen NCERT BASED QUESTIONS MCQ
Due to high degree of polymorphism, size of VNTR varies from :-
A.
0.1 āˆ’ 2 kb
B.
0.1 āˆ’ 2000 kb
C.
0.1 āˆ’ 20 kb
D.
0.1 āˆ’ 200 kb
1961 Q5 Allen GENE REGULATION MCQ
A functional complex comprising a cluster of genes including structural gene, a promoter gene, an operator gene and a regulator gene was discovered by :-
A.
Beadle and Tatum (1958)
B.
Watson and Crick (1953)
C.
Jacob and Monod (1961)
D.
Britten and Davidson
1958 Q6 Allen GENETIC MATERIAL, DNA MCQ
The unequivocal proof that DNA is the genetic material came from the experiments of :
A.
Hershey and Chase (1952)
B.
Frederik Griffith (1928)
C.
Watson and Crick
D.
Meselson and Stal
Q7 Allen GENETIC MATERIAL, DNA MCQ
In eukaryotic cell circular and double stranded DNA occurs in :-
A.
Golgi body
B.
Mitochondria
C.
Nucleus
D.
Ribosome
Q8 Allen GENETIC MATERIAL, DNA MCQ
Double helix model of DNA which was proposed by Watson and Crick was of:-
A.
C-DNA
B.
B-DNA
C.
D-DNA
D.
Z-DNA
Q9 Allen GENETIC MATERIAL, DNA MCQ
If there are 10,000 nitrogenous base pairs in a DNA then how many nucleotides are there:-
A.
500
B.
10,000
C.
20,000
D.
40,000
Q10 Allen GENETIC MATERIAL, DNA MCQ
Double helix model of DNA was proposed by :
A.
Watson and Crick
B.
Schleiden Schwann
C.
Singer and Nicholson
D.
Kornberg and Khurana
Q11 Allen GENETIC MATERIAL, DNA MCQ
Back bone in structure of DNA molecule is made up of :-
A.
Pentose Sugar and phosphate
B.
Hexose sugar and phosphate
C.
Purine and pyrimidine
D.
Sugar and phosphate
Q12 Allen GENETIC MATERIAL, DNA MCQ
Substance common in DNA and RNA :-
A.
Hexose Sugar
B.
Histamine
C.
Thymine
D.
Phosphate groups
Q13 Allen GENETIC MATERIAL, DNA MCQ
Nucleotide is :-
A.
Nā‚‚ - base, pentose sugar and phosphoric acid
B.
Nitrogen, Hexose sugar and phosphoric acid
C.
Nitrogen base and pentose sugar
D.
Nitrogen base, trioses and phosphoric acid BMI007
Q14 Allen GENETIC MATERIAL, DNA MCQ
Unit of nucleic acids are:-
A.
Phosphoric acid
B.
Nitrogenous bases
C.
Pentose Sugar
D.
Nucleotides
Q15 Allen GENETIC MATERIAL, DNA MCQ
Which element is not found in nitrogenous base?
A.
Nitrogen
B.
Hydrogen
C.
Carbon
D.
Phosphorus
Q16 Allen GENETIC MATERIAL, DNA MCQ
DNA was first discovered by:-
A.
Miescher
B.
Robert Brown
C.
Flemming
D.
Watson & Crick BMI010
Q17 Allen GENETIC MATERIAL, DNA MCQ
Nucleic acid (DNA) is not found in:-
A.
Nucleus & nucleolus
B.
Peroxisome & ribosome
C.
Mitochondria & plastid
D.
Chloroplast & nucleosome
Q18 Allen GENETIC MATERIAL, DNA MCQ
DNA is not present in :-
A.
Mitochondria
B.
Chloroplast
C.
Bacteriophage
D.
TMV
Q19 Allen GENETIC MATERIAL, DNA MCQ
A nucleic acid contains thymine or methylated uracil then it should be :-
A.
DNA
B.
RNA
C.
Either DNA or RNA
D.
RNA of bacteria
Q20 Allen GENETIC MATERIAL, DNA MCQ
Prokaryotic genetic system contains :-
A.
DNA & histones
B.
RNA & histones
C.
Either DNA or histones
D.
DNA but no histones
Q21 Allen GENETIC MATERIAL, DNA MCQ
A Nā‚‚- base together with pentose sugar and phosphate forms (or) building - block unit of nucleic acid is :-
A.
Nucleoside
B.
Polypeptide
C.
Nucleotide
D.
Amino acid
Q22 Allen GENETIC MATERIAL, DNA MCQ
Which of the following is not a pyrimidine Nā‚‚ base?
A.
Thymine
B.
Cytosine
C.
Guanine
D.
Uracil
Q23 Allen GENETIC MATERIAL, DNA MCQ
The purine & pyrimidine pairs of complementary strands of DNA are held together by :-
A.
H - bonds
B.
O - bonds
C.
C - bonds
D.
N - bonds
Q24 Allen GENETIC MATERIAL, DNA MCQ
Number of H - bonds between guanine and cytosine are :-
A.
One
B.
Two
C.
Three
D.
Four
Q25 Allen GENETIC MATERIAL, DNA MCQ
Which purine & pyrimidine bases are paired together by H - bonds in DNA ?
A.
AC & GT
B.
GC & AT
C.
GA & TC
D.
None of the above