How many of the following genotypes are representing tall plants with round seeds? TTrr, Ttrr, TtRr, TTRr, ttrr, TtRR

Step-by-step solution

In pea plants, the allele for tallness ( T ) is dominant over dwarfness ( t ), and the allele for round seeds ( R ) is dominant over wrinkled seeds ( r ). For a plant to be tall with round seeds, its genotype must contain at least one dominant allele for both traits, which means it must be of the form T _R _ . Analyzing the given genotypes: TTrr : Tall, wrinkled Ttrr : Tall, wrinkled TtRr : Tall, round TTRr : Tall, round ttrr : Dwarf, wrinkled TtRR : Tall, round There are three genotypes ( TtRr , TTRr , and TtRR )