Footnote
a The changes dog breeders can produce often result from losses in gene function. For example, the dachshund’s small size is caused by a failure of normal development of cartilage, resulting in dwarfism.
a The changes dog breeders can produce often result from losses in gene function. For example, the dachshund’s small size is caused by a failure of normal development of cartilage, resulting in dwarfism.