1
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
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following factors is responsible for the formation of concentrated urine?
A
Secretion of erythropoietin by Juxtaglomerular complex.
B
Hydrostatic pressure during glomerular filtration.
C
Low levels of antidiuretic hormone.
D
Maintaining hyperosmolarity towards inner medullary interstitum in the kidneys
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
In Antirrhinum (Snapdragon), a red flower was crossed with a white flower and in F1 generation, pink flowers were obtained. When pink flowers were selfed, the F2 generation showed white, red and pink flowers. Choose the incorrect statement from the following :
A
Ratio of F2 is $${1 \over 4}$$ (Red) : $${2 \over 4}$$ (Pink) : $${1 \over 4}$$ (White)
B
Law of Segregation does not apply in this experiment
C
This experiment does not follow the Principle of Dominance
D
Pink colour in F1 is due to incomplete dominance
4
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
Under which of the following conditions will there be no change in the reading frame of following mRNA?

5' AACAGCGGUGCUAUU 3'
A
Insertion of A and G at 4th and 5th positions respectively
B
Deletion of GGU from 7th, 8th and 9th positions
C
Insertion of G at 5th positions
D
Deletion of G from 5th positions