5. Genotypes of parents: Female - X^R X^r, Male - X^R Y
white eyed, male: 25%
white eyed, female: 0%
red eyed, male: 25%
red eyed, female: 50%
6. Cross: X^h Y (male with hemophilia) x X^H X^h (carrier female)
Probability children will have disease: 50%
7. Cross: X^H Y (non-hemophilic male) x X^H X^h (carrier female)
Probability children will have hemophilia: 25%
Sex of child with hemophilia: Male
8. Cross: X^h X^h (hemophiliac female) x X^H Y (non-hemophilic male)
Children with hemophilia: 50% (all males)
9. Calico cat genotype: X^B X^R
Cross: X^B X^R (female calico) x X^B Y (black male)
Black and male: 25%
Calico and male: 0%
Calico and female: 25%
10. Cross: X^B X^B (female black) x X^R Y (male orange)
Calico and female: 0%
All male cats color: Black
Parent Tip: Review the logic above to help your child master the concept of genetics x linked genes worksheet.
