Hemophilia is an x-linked recessive disorder that is passed through generations and can be traced by using a pedigree. who has hemophilia in the pedigree that is shown? john and ann fred and luke john, charles, jack, and irene ann and marie

The half colored half white circle indicates that the person is a carrier but doesn't have the disease. Since John has a capital H we can assume that if someone else has a capital H genotype then they don't have it. Every body but Fred and Luke have a capital H and their squares are fully colored meaning that they have hemophilia

The answer is Fred and Luke

The pedigree shown above indicates that Fred and Luke have hemophilia.

A pedigree is a graphical representation that indicates the occurrence of a given phenotypic trait in a group of genetically-related individuals across generations.

In a pedigree, males are represented by square symbols, while females are represented by circle symbols.

The phenotypic feature studied in a family pedigree is represented by colored-filled symbols, while carriers, i.e., heterozygous individuals for the condition being assessed, are represented by half-shaded circles (females) or squares (males).

In conclusion, the pedigree shown above indicates that Fred and Luke have hemophilia.

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