Which statement indicates that an individual with an autosomal recessive disorder understands its pattern of inheritance?
A) A carrier will not express the trait.
B) The trait will be expressed with one copy of the gene.
C) The affected gene is on the sex chromosome.
D) More females are affected than males
A) A carrier will not express the trait.
Explanation: A) The word autosomal means that the gene of interest is on one of the non-sex chromosomes. Thus, males or females can be affected. Recessive inheritance indicates that both copies of a gene must not be working to express the trait. A person who inherits only one copy of a mutated gene will be a carrier but will not express the trait.
B) The word autosomal means that the gene of interest is on one of the non-sex chromosomes. Thus, males or females can be affected. Recessive inheritance indicates that both copies of a gene must not be working to express the trait. A person who inherits only one copy of a mutated gene will be a carrier but will not express the trait.
C) The word autosomal means that the gene of interest is on one of the non-sex chromosomes. Thus, males or females can be affected. Recessive inheritance indicates that both copies of a gene must not be working to express the trait. A person who inherits only one copy of a mutated gene will be a carrier but will not express the trait.
D) The word autosomal means that the gene of interest is on one of the non-sex chromosomes. Thus, males or females can be affected. Recessive inheritance indicates that both copies of a gene must not be working to express the trait. A person who inherits only one copy of a mutated gene will be a carrier but will not express the trait.
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