1
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Following are the two statements regarding the origin of life -
(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen
Of the above statements which one of the following options is correct ?
A
Both (a) and (b) are false
B
Both (a) and (b) are correct
C
(b) is correct but (a) is false
D
(a) is correct but (b) is false
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Random undirectional change in allele frequencies that occur by chance in all populations and especially in small populations is known as :-
A
Genetic drift
B
Migration
C
Mutation
D
Natural selection
3
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Genetic variation in a population arises due to :
A
Reproductive isolation and selection
B
Mutations only
C
Mutations as well as recombination
D
Recombination only
4
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
Dinosaurs dominated the World in which of the following geological era ?
A
Jurassic
B
Devonion
C
Coenozoic
D
Mesozoic
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