Some genes, such as those that code for enzymes, lose their function when they mutate and while these alleles do no damage, they serve no function. In
heterozygotes, this mutation leaves only one functional allele for that gene, which is typically enough for an individual to function normally. The above
description of a dysfunctional allele best describes which of the following inheritance patterns?
A recessive
dominant
codominant
D
X-linked