Question

In peas, Mendel found that tall plants and yellow peas are dominant. The phenotype for a pea plant with the genotype TtYy would be...

A) Tall with yellow peas.
B) Dwarf with yellow peas.
C) Tall with green peas.
D) Dwarf with green peas.

Answer 1

The phenotype of a pea plant with the genotype TtYy is Tall with yellow peas, as the dominant traits for height (T) and pea color (Y) are both expressed.

Step-by-step explanation:

The phenotype for a pea plant with the genotype TtYy would be Tall with yellow peas. Mendel discovered through his experiments that in peas, the tall trait (T) is dominant over the dwarf trait (t), and the yellow pea color (Y) is dominant over the green pea color (y). A pea plant with the genetic make-up of TtYy has both dominant alleles T (tall) and Y (yellow), which means that even though it carries the recessive alleles t (dwarf) and y (green), the dominant traits will be expressed. Therefore, the correct answer is A) Tall with yellow peas. Mendel's work was fundamental in the establishment of the principles of dominance and segregation in genetics.