1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
Variations caused by mutation, as proposed by Hugo de Vries, are :
A
small and directional
B
small and directionless
C
random and directional
D
random and directionless
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
In a species, the weight of newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5kg die. Which type of selection process is taking place?
A
Disruptive Selection
B
Cyclical Selection
C
Directional Selection
D
Stabilizing Selection
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Change Language
The similarity of bone structure in the forelimbs of many vertebrates is an example of
A
homology
B
analogy
C
convergent evolution
D
adaptive radiation
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
Change Language
According to Hugo de Vries, the mechanism of evolution is
A
multiple step mutations
B
saltation
C
phenotypic variations
D
minor mutations

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