- For problem 1, the genotypes correspond to: XRXr (red-eyed female), XRY (red-eyed male), XRXR (red-eyed female), and XrY (white-eyed male).
- For problem 2, the phenotypes correspond to: white-eyed male (XrY), red-eyed heterozygous female (XRXr), white-eyed female (XrXr), and red-eyed male (XRY).
- For problem 3, crossing XrXr (white-eyed female) with XRY (red-eyed male) yields offspring with genotype ratio 2 XRXr : 2 XrY and phenotype ratio 2 red-eyed females : 2 white-eyed males.
- For problem 4, crossing a pure red-eyed female (XRXR) with a white-eyed male (XrY) produces offspring where 50% are white-eyed males.
Parent Tip: Review the logic above to help your child master the concept of genetics x linked genes worksheet.
