Question

The principle of _____ suggests that a plant with the genotype Tt will display a tall phenotype.

incomplete dominance
codominant
dominance
segregation

Answer 1

dominance because the tall(T) gene is dominant over the t gene so the plant is tall.

Answer 2

The correct answer would be "dominance".

The principle of dominance states that the the dominant trait expresses itself over the recessive allele in a heterozygous condition.

For example, in Tt the T is the dominant trait due to which the phenotype of a plant becomes tall.

Similarly, the plant with Rr would bear round seeds as R is the dominant trait which codes for round seed and r is the recessive trait which codes for wrinkled shaped seeds.