In watermelons, solid green rind color (G) is dominant to stripes (g).

A farmer crosses two watermelon plants that are heterozygous for rind color.

What are the odds that the offspring will have solid green rinds?

There are chances of 75% solid green coloured rind in watermelons.

Explanation:

Dominant trait = Solid Green rind G

Recessive trait = stripes g

Given that both the parent plants are heterozygous so their alleles will be

Gg Gg

From the Punnet square

G g

G GG Gg

g Gg gg

The phenotype ratio is 3:1 (3 watermelons with the green colour rind and 1 with striped rind observed)

Genotype ratio is 1:2:1

From the observation, we can say that 75% of the watermelons will have solid green colour rind because G is dominant over g.