In fruit flies the allele for white eyes is recessive to the allele for red eyes. in generation of fruit flies 45 males with white eyes and 46 females with white eyes 44 males with red eyes and 47 females with red eyes are produced. which of the following is the best conclusion you can make out about the parents of this generation

One parent was heterozygotes for eye color and the other was homozygotes for red eyes.

heterozygous / homozygous refers to whether both alleles for a gene are the same. The organism is homozygous if both alleles are the same - that is, either both are dominant or both are recessive. The organism is heterozygous if the alleles are different - that is, if one allele is dominant and the other allele is recessive..
 the answer to the questions is A. One parent was heterozygous for eye color and the other was homozygous with red eyes.

The answer is reflection.