question_answer

In a plant, red fruit (R) is dominant over yellow fruit (r) and tallness (T) is dominant over shortness (t). If a plant with RRTt genotype is crossed with a plant that is rrtt, :                                                           

A) 25% will be tall with red fruit                                      

B) 50% will be tall with red fruit

C)  75% will be tall with red fruit                                     

D)  all of the offspring will tall with red fruit

Correct Answer: B

Solution :

                Conclusion:                 1. All plants are red.                        2. 50 are red tall.               3. 50% are red dwarf.