question_answer

If a heterozygous tall plant is crossed with dwarf plant, what will be the ratio of dwarf plants in the progeny

A)                  50%                                      

B)  25%

C)                  75%                                      

D)  100%

Correct Answer: A

Solution :

                 \[{{F}_{1}}-Tt\] Recessive trait - tt                                                                 When an \[{{F}_{1}}\] individual is crossed with recessive homozygous for testing purpose, it is called test cross. On the other hand, when \[{{F}_{1}}\] individual is crossed with either of the parent, it is called back cross.