Correct Answer:- Option-A
Question68:-What is LD 50 ?
A:-Mutagen kills 50% treated materials
B:-Mutagen kills 50% un-treated materials
C:-Low dose of 50% chemicals
D:-Low dose of semi mutagen
Correct Answer:- Option-A
Question69:-The codons which collectively code for the same amino acid
A:-Synonymous codons or Degenerate codons
B:-Initiation codons
C:-Termination codons
D:-Triplet codons
Correct Answer:- Option-A
Question70:-A mother of blood group O has a child of O group. The father could be
A:-A or B or 0
B:-O only
C:-A or B
D:-AB only
Correct Answer:- Option-A
Question71:-How many genetically different gametes can be made by an individual genotype AaBbccDDEe ?
‏8ھ‎
‎8-0
‎C:-32
‎D:-5
‎Correct Answer:- Option-A
Question72:-Cite an example of non-allelic interaction
A:-Complementary gene action
B:-Multiple allelism
C:-Co-dominance
D:-Incomplete dominance
Correct Answer:- Option-A
Question73:-Polymerase chain reaction involves
A:-Denaturation, annealing and polymerisation
B:-Polymerisation and denaturation
:-Extension and annealing
D:-None of these
Correct Answer:- Option-A
Question74:-DNA is separated by
A:-Agarose Gel electrophoresis
B:-PAGE
:-SDA-PAGE
D:-SDS-PAGE
Correct Answer:-Question Cancelled
Question75:-If the respiratory substrate is fat and oil, what will be the R.Q. ?
A

Question76:-Biosynthesis of Ethylene from
A:-Methionine
-Mevalonic acid
C:-Tryptophan
D:-Cysteine
Correct Answer:- Option-A
Question77:-A programme to identify complete gene structures in genomic DNA
A:-SWISSPORT
B:-BLAST
C:-GENSCAN