141.
Which of the following statements is correct? A
Adenine pairs with thymine through one $$H$$-bond
B
Adenine pairs with thymine through three $$H$$-bonds
C
Adenine does not pair with thymine
D
Adenine pairs with thymine through two $$H$$-bonds
Answer :
Adenine pairs with thymine through two $$H$$-bonds
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
142.
Which one of the following triplet codes, is correctly matched with its specificity for an amino acid in protein synthesis or as 'start' or 'stop'codon ? A
UAC - Tyrosine
B
UCG - Start
C
UUU - Stop
D
UGU - Leucine
Answer :
UAC - Tyrosine
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
143.
From the following, identify the correct combination of salient features of Genetic Code. A
Degenerate, Non-overlapping, Nonambiguous
B
Universal, Non-ambiguous, Overlapping
C
Degenerate, Overlapping, Commaless
D
Universal, Ambiguous, Degenerate
Answer :
Degenerate, Non-overlapping, Nonambiguous
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
144.
In a mutational event, when adenine is replaced by guanine, it is a case of A
frame shift mutation
B
transcription
C
transition
D
transversion
Answer :
transition
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
145.
Because most of the amino acids are represented by more than one codon, the genetic code is A
overlapping
B
wobbling
C
degenerate
D
generate
Answer :
degenerate
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
146.
The first phase of translation is A
Recognition of DNA molecule
B
Aminoacylation of tRNA
C
Recognition of an anti-codon
D
Binding of mRNA to ribosome
Answer :
Aminoacylation of tRNA
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
147.
Which of the following forms the basis of DNA Finger printing? A
The relative proportions of purines and pyrimidines in DNA
B
Satellite DNA occurring as highly repeated short DNA segments
C
The relative difference in the DNA occurrence in blood, skin and saliva
D
The relative amount of DNA in the ridges and grooves of the fingerprints
Answer :
Satellite DNA occurring as highly repeated short DNA segments
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
148.
In E.coli during lactose metabolism repressor binds to A
regulator gene
B
operator gene
C
structural gene
D
promoter gene
Answer :
operator gene
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
149.
DNA elements which can switch their position are called A
exons
B
introns
C
cistrons
D
transposons
Answer :
transposons
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.
150.
In the DNA molecule A
the total amount of purine nucleotides and pyrimidine nucleotides is not always equal
B
there are two strands which run parallel in the $$5' \to 3'$$ direction
C
the proportion of Adenine in relation to thymine varies with the organism
D
there are two strands which run anti parallel one in $$5' \to 3'$$ direction and other in $$3' \to 5'$$
Answer :
there are two strands which run anti parallel one in $$5' \to 3'$$ direction and other in $$3' \to 5'$$
View Solution
Discuss Question
No explanation is given for this question. Let's discuss the answer together.