Correct answer
D. A and B
Explanation
The correct answer is A and B.
The reason why mutations which are harmful do not eliminated from gene pool is that________?
A channel artificially constructed for water conveyance of appreciable quantities with no problem of silting and scouring is called ________?
Genus of citrus is________?
Which one of the following horticultural plants is well known for its cooling effect ________?
Anthrax is a ________?
A type of resistance in which a series of different cultivars of the same crop are infested with a series of different insect biotypes of same species show a differentia interaction is known as________?