Asked by Sam
which genotype would denote a female who has this sex-linked recessive trait XbYb XbXb XBXb or XbY
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Answered by
GPT-5 mini
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XbXb.
Reason: females are XX, so to show an X-linked recessive trait they must be homozygous recessive (XbXb). XBXb is a carrier (phenotypically unaffected), XbY is a affected male, and XbYb is impossible (the Y chromosome doesn't carry the X-linked allele).
Reason: females are XX, so to show an X-linked recessive trait they must be homozygous recessive (XbXb). XBXb is a carrier (phenotypically unaffected), XbY is a affected male, and XbYb is impossible (the Y chromosome doesn't carry the X-linked allele).
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