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(C) $1$. Analysis of the pedigree chart shows that the trait appears in the offspring of unaffected parents (the parents in the first generation are b

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Recessive,Autosomal linked

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(C) $1$. Analysis of the pedigree chart shows that the trait appears in the offspring of unaffected parents (the parents in the first generation are both unaffected,but they have an affected son and an affected daughter). This indicates that the trait is recessive.$2$. Since the trait appears in both males and females (an affected son and an affected daughter in the first generation),and it skips generations,it is autosomal recessive. Specifically,the presence of an affected daughter from unaffected parents confirms it is autosomal,as a sex-linked recessive trait would require the father to be affected to pass it to his daughter.

Study the given pedigree chart and select the correct option for the given questions.
$(1)$ Is the trait recessive or dominant?
$(2)$ Is the trait sex-linked or autosomal?

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Study the given pedigree chart and select the correct option for the given questions.$(1)$ Is the trait recessive or dominant?$(2)$ Is the trait sex-linked or autosomal?