1
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
According to Darwin, the organic evolution is due to -
A
Reduced feeding efficiency in one species due to the presence of interfering species
B
Competition within closely related species
C
Intraspecific competition
D
Interspecific competition
2
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
The tendency of population to remain in genetic equilibrium may be disturbed by :
A
lack of random mating
B
random mating
C
lack of migration
D
lack of mutations
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as :
A
Genetic drift
B
Genetic load
C
Genetic flow
D
Random mating
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
Change Language
The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge is called :
A
Convergent evolution
B
Adaptive radiation
C
Natural selection
D
Non-random evolution
NEET Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12