question_answer

In a given plant, red colour (R) of fruits is dominant over white fruit (r): and tallness (T) is dominant over dwarfness (t). If a plant with genotype RRTt is crossed with a plant of genotype rrtt, what will be the percentage of tall plants with red fruits in the next generation?

A) 100%                                    

B) 25%                       

C) 50%                       

D)       75%

Correct Answer: C

Solution :

RRTt ntt ... (Parenti) (Red tall) (Whitedwarf) Phenotype of different plants is (i) All plants contain red fruits. (ii) 50% plants are tall with red fruits, (iii) 50% plants are dwarf with red fruits