Sex-linked traits worksheet for genetics education, focusing on fruit fly eye color inheritance.

A worksheet titled "Sex linked traits #1" that explains fruit fly eye color genetics, including genotype analysis and Punnett squares for crosses involving red and white eye traits.

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- X^R X^r: Female, Red-eyed
- X^R Y: Male, Red-eyed
- X^r X^r: Female, White-eyed
- X^R X^R: Female, Red-eyed
- X^r Y: Male, White-eyed

Cross 1 (Heterozygous red-eyed female x Red-eyed male):
- Punnett Square:
- Top row: X^R | X^r
- Left column: X^R | Y
- Offspring genotypes: X^R X^R, X^R X^r, X^R Y, X^r Y
- Phenotype percentages:
- Female Red eyed: 100%
- Female White eyed: 0%
- Male Red eyed: 50%
- Male White eyed: 50%

Cross 2 (White-eyed female x Red-eyed male):
- Punnett Square:
- Top row: X^r | X^r
- Left column: X^R | Y
- Offspring genotypes: X^R X^r, X^R X^r, X^r Y, X^r Y
- Phenotype percentages:
- Female Red eyed: 100%
- Female White eyed: 0%
- Male Red eyed: 0%
- Male White eyed: 100%

Parent Tip: Review the logic above to help your child master the concept of sex linked inheritance worksheet.

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