- Autosomal dominant disorder in a male: The male has one copy of the dominant allele on one of his autosomal chromosomes, which causes the disorder to be expressed. In this case, the male inherited the dominant allele from one of his parents.
- Autosomal recessive disorder in a female: The female has two copies of the recessive allele on her autosomal chromosomes, causing the disorder to be expressed. In this case, the female inherited one recessive allele from each of her parents.
- X-linked recessive disorder in a female: The female has two copies of the recessive allele on one of her X chromosomes, causing the disorder to be expressed. In this case, the female inherited one copy of the recessive allele from each of her parents.
- X-linked recessive disorder in a male: The male has one copy of the recessive allele on his X chromosome, since males only have one X chromosome. In this case, the male inherited the recessive allele from his mother.
autosomal dominant disorder in a male
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autosomal recessive disorder in a female
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X-linked recessive disorder in a female
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X-linked recessive disorder in a male
2 alleles 1 allele
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