If two heterozygous pea plants are crossed, what percentage of their offspring is expected to have green pods?

To understand why the correct answer is 75%, we need to look at the genetics of pea plants, specifically focusing on the trait for pod color. In these plants, green pods are typically dominant over the color associated with another pod trait, often yellow.

When two heterozygous pea plants are crossed, we are dealing with the genotype that includes one dominant allele (for green pods) and one recessive allele (for yellow pods). This means that the genotype of each parent can be represented as "Gg", where "G" is the allele for green pods and "g" is the allele for yellow pods.

Using a Punnett square to analyze this cross, the potential offspring genotypes from this mating would be as follows:

• GG (homozygous dominant) for green pods

• Gg (heterozygous) for green pods

• gG (heterozygous) for green pods

• gg (homozygous recessive) for yellow pods

From this, we can see that three out of the four possible genotype combinations (GG, Gg, gG) will result in green pods. Therefore, when we calculate the percentages, we find that 75% of the offspring will