1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a "triplet" ?
A
Nirenberg and Mathaei
B
Morgan and Sturtevant
C
Hershey and Chase
D
Beadle and Tatum
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Removal of introns and joining the exons in a defined order in a transcription unit is called :
A
Transformation
B
Capping
C
Splicing
D
Tailing
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
What is not true for genetic code?
A
It is nearly universal
B
A codon in mRNA is read in a noncontiguous fashion
C
It is degenerate
D
It is unambiguous
4
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
In the case of peppered moth (Biston betularia) the black-coloured from became dominant over the light-coloured form in England during industrial revolution. This is an example of -
A
Natural selection whereby the darker forms were selected.
B
Protective mimicry
C
Inheritance of darker colour character acquired due to the darker environment
D
Appearance of the darker coloured individuals due to very poor sunlight
EXAM MAP