A) If both the assertion and the reason are true and the reason 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 reason is false
D) If both the assertion and reason are false
E) If the assertion is false but reason is true
Correct Answer: A
Solution :
Backcross is cross which is performed between hybrid and one of its parents. In testeross, the individual is crossed with recessive parent. It is called a testcross, because it is used to test whether an individual is homozygous or heterozygous (hybrid).
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