Final answer:
The ratio of offspring resulting from a cross between a white-eyed male and a female that is heterozygous for red eye color is 1:1, with 50% having red eyes and 50% having white eyes.
Step-by-step explanation:
The ratio of offspring resulting from a cross between a white-eyed male and a female that is heterozygous for red eye color can be determined using a Punnett square. The Punnett square shows the possible combinations of alleles from both parents and the resulting genotypes and phenotypes of the offspring.
In this case, the white-eyed male will only contribute the recessive allele for white eye color. The female, being heterozygous for red eye color, can contribute either a dominant allele for red or a recessive allele for white. The ratio of offspring would be 1:1, with 50% having red eyes and 50% having white eyes.