Final answer:
The expected phenotypic ratio of offspring from a cross between two heterozygous organisms is 1:1 for the specific trait being examined.
Step-by-step explanation:
When you cross two heterozygous organisms, you are performing a monohybrid cross. In this case, the heterozygous organisms are individuals that have different alleles for a specific trait.
For example, if we cross two heterozygous individuals for eye color in fruit flies, where one is a white-eyed male and the other is a female heterozygous for red eye color, we would use a Punnett square to determine the offspring's genotypes and phenotypes.
In this case, the expected phenotypic ratio of the offspring would be 1 white-eyed : 1 red-eyed.