Definitions

1. noun

The condition in which an individual or a species has two or more different forms of the same gene, or the same form of a gene in two or more different species, where one or more of these forms is a result of mutation or recombination.

“The discovery of homoplasmy in the plant species was a significant finding in the field of genetics.”

2. noun

A state of having identical or nearly identical DNA sequences from different sources, often used to describe the sharing of mitochondrial DNA between two or more individuals.

“The researchers found evidence of homoplasmy in the mitochondrial DNA of the two siblings, suggesting a common ancestor.”