Question

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 possible genotypes and phenotypes of the offspring and the percent chance for each?

Answer 1

Answer:

75%

Explanation:

The correct answer is 75 %

As solid green rind color(G) is dominant to stripe (g) than even one single allele of green rind color in the offspring will produce watermelon offsprings with solid green rinds. As the two watermelon plants are heterozygous for rind color, therefore, they must have genotype

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Answer 2

According to the question, solid green rind colour is dominant to stripes. Two heterozygous dominant off springs were crossed.

Heterozygous Dominant : Gg

Punett Square for the above case would be :

$\begin{array}{|c|c|c|} & \sf G & \sf g \\ \cline{1-3} \sf G & \sf GG & \sf Gg \\ \cline{1-3} \sf g & \sf Gg & \sf gg \end{array}$

Three rind watermelons and one stripped watermelon are obtained.

• Phenotype Ratio = 3 : 1

One dominant, two Heterozygous Dominant and One recessive genotypes are obtained.

• Genotype Ratio = 1 : 2 : 1.

In accordance with Mendelian Genetics,

Dominant trait has a 75% percent inheritance while the recessive one has 25% chance.