A) Each back cross is a test cross.
B) Each test cross is a back cross.
C) Crossing \[{{F}_{2}}\] with \[{{F}_{1}}\] is a test cross.
D) Crossing \[{{F}_{2}}\] with \[{{P}_{1}}\] is called a test cross.
Correct Answer: B
Solution :
: Back cross is a cross which is performed between hybrid and one of its parents, In plant breeding, back cross is performed a few times order to increase the traits of that parent .Back cross is of two types-test cross and out cross In test cross, the individual is crossed with recessive parent in order to know whether individual is homozygous or heterozygous for dominant character. On the other hand, an out cross is that back cross in which \[{{F}_{1}}\] hybrid is crossed with its dominant parent. Thus each test cross is a back cross but each back cross is not a test cross.
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