1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
In a random mating population in equilibrium, which of the following brings about a change in gene frequency in a non-directional manner : -
A
Selection
B
Random drift
C
Mutations
D
Migration
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Industrial melanism is an example of : -
A
Darkening of skin due to smoke from industries
B
Defensive adaptation of skin against ultraviolet radiations
C
Drug resistance
D
Protective resemblance with the surroundings
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Which one of the following is categorised under living fossils ?
A
Cycas
B
Metasequoia
C
Pinus
D
Selaginella
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Which one of the following describes correctly the homologous structures ?
A
Organs with anatomical dissimilarities but performing same function
B
Organs that have no function now, but had an important function in ancestors
C
Organs with anatomical similarities, but performing different func
D
Organs appearing only in embryonic stage and disappearing later in the adult
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