81.
Gene mutation is caused
A
Due to reproducation
B
Due to linkage
C
Due to change in sequence of genes in DNA
D
Due to change is sequence of gene in DNA
Answer :
Due to change in sequence of genes in DNA
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82.
A baby has been born with a small tall. It is a case exhibiting
A
Retrogressive evolution
B
Mutation
C
Atavism
D
Metamorphosis
Answer :
Atavism
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83.
As per theory given by Oparin, the early atmosphere of earth contained
A
NH3, N2, H2O
B
NH3, N2, HCN, H2O
C
NH3, CH4, H2, H2O
D
CH4, HCN, H2O
Answer :
NH3, CH4, H2, H2O
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84.
Which of the following is not produced by E.Coli in the lactose
A
P galactosidase
B
Thiogalactoside transacetylase
C
Lactose dehydrogenase
D
Lactose permease
Answer :
Lactose dehydrogenase
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85.
Closed ancestor to modern man was
A
Neanderthal man
B
Homo habilis
C
Cro-magnon man
D
Australopithecus
Answer :
Cro-magnon man
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86.
Which of the following is the most effective chemical mutagen which induce mutations
A
Caffeine
B
Guanine
C
Methane
D
Carbon-tetra-sulphide
Answer :
Carbon-tetra-sulphide
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87.
No. of Bar Body in XXXX female
A
1
B
2
C
3
D
4
Answer :
3
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88.
The genetic information is carried by
A
Chromosome
B
Nucleic acid
C
Gamete / Cells
D
Cytoplasm
Answer :
Chromosome
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89.
In human right handedness is dominant over left handedness. What offsprings would be expected from two left handed parents
A
Only left handed
B
Only right handed
C
Left handed and right handed both
D
Neither left handed nor right handed
Answer :
Only left handed
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90.
A colour blind mother and normal father would have
A
colour blind sons and normal/carrier daughters
B
colour blind sons and daughters
C
all colour blind
D
all normal
Answer :
colour blind sons and normal/carrier daughters
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