1
NEET 2016 Phase 1
MCQ (Single Correct Answer)
+4
-1
Analogous structures are a result of :
A
Divergent evolution
B
Convergent evolution
C
Stabilizing selection
D
Shared ancestry
2
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
3
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
4
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
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