What is an accurate feature of autosomal dominant inheritance patterns?

An accurate feature of autosomal dominant inheritance patterns is that it requires only one copy of the dominant allele for the trait to be expressed. This means that if an individual has at least one dominant allele (designated as 'A'), they will exhibit the characteristic associated with that allele, regardless of the second allele (which can be either dominant or recessive).

This is a fundamental aspect of autosomal dominant inheritance, demonstrating that the presence of a single dominant allele is sufficient to manifest the phenotype. In families exhibiting traits governed by this pattern of inheritance, affected individuals can pass the trait to their offspring, with each child having a 50% chance of inheriting the trait if one parent carries the dominant allele.

Other options incorrectly describe characteristics of autosomal dominant inheritance. For example, the assertion that it allows only males to express the trait is inaccurate because both males and females can be affected. The notion that it skips generations is not accurate since autosomal dominant traits typically appear in every generation if the allele is present. Lastly, the statement regarding both sexes being affected equally only in homozygotes inaccurately suggests a limitation to homozygous individuals, while in reality, the dominant phenotype can be expressed in any individual with at least one dominant allele.