Question

In one experiment, the parietal generation is formed by pure parents colored yellow (VV) and green (vv). All individuals formed in the crossing of the P generation have a yellow color (Vv) and are called the F1 generation.

The crossing of F1 components generated offspring for the F2 generation, three of which were yellow (VV, Vv and Vv) and one was green (vv).

According to the factors that determine the color of the generated individuals, it is possible to state that

a) The yellow color is dominant and the green color is recessive.
b) The yellow color is recessive and the green color is dominant.
c) The color of the factors is determined by heredity in one of the genes.
d) One color is expressed at the expense of the inactivity of the other.​

Answer 1

Correct alternative: a) The yellow color is dominant and the green color is recessive.

As observed in his experiment, Mendel identified that two factors determine the color of peas: a dominant for the yellow color and a recessive that expressed the green.

The dominant gene is the one that determines a characteristic, even when in simple doses in the genotypes. The recessive gene is only expressed when in double dose, because in the presence of a dominant, it becomes inactive.