question_answer

A pure tall and a pure dwarf plant were crossed to produce offsprings. Offsprings were self-crossed, then find out the ratio between true breeding tall to true breeding dwarf ?

A)  1 : 1                                      

B)  3 :1

C)  2 : 1                                      

D)  1 : 2 : 1

Correct Answer: A

Solution :

                In test cross, f1 heterozygous (with tall plant) is crossed with pure recessive (dwarf plant)