Assertion : Hybrids are generally back crossed.
Back cross is done to increases the trains of the parnnts.

Options

A. If both the assertion and the reason are true and the reasons is a correct explanation of the assertion
B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C. If the assertion is true but the reson is false
D. If both the assertion and reason are false

Answer

A

Explanation

Back cross is a cross which is performed between hybrid and one of its parent . In plant breeding back cross is performed a few times in order to increase the traits of that parent.
For example a crop plant is crossed with a wild variety in order to obtain its disease resistance. In the process most good traits or the crop plant get diluted. the hybrid is , therefore repeatedly crossed with parent crop plant in order to transfer the good traits back into it.