Final answer:
Autosomal dominant genes are always expressed and do not need homozygosity for expression. There is a 50% chance of inheriting such disorders if one parent is a carrier.
Explanation:
Autosomal dominant genes are always expressed even if they are heterozygous. They occur on non-sex determining chromosomes and do not require homozygosity for expression. The chances of inheriting an autosomal dominant disorder are 50% if one parent is a carrier.
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