The sex of the fruit fly Drosophila melanogaster is determined as follows: XX chromosomes give a female and XY give a male. The gene for bar eyes is recessive and located on the X chromosome. If two bar-eyed flies are mated, what percentage of the offspring will have bar eyes?

Question

Quizplus · Accepted Answer

Since the gene for bar eyes is recessive and located on the X chromosome, and both parents have bar eyes, all offspring must inherit the bar-eyed gene from each parent, resulting in 100% of the offspring having bar eyes.

The Sex of the Fruit Fly Drosophila Melanogaster Is Determined