overdominance

== English == === Etymology === From over- +‎ dominance. === Noun === overdominance (usually uncountable, plural overdominances) (genetics) The case in which a heterozygote has a higher fitness or more extreme phenotype than either homozygote. Excessive dominance. ==== Related terms ==== dominance ==== Further reading ==== overdominance on Wikipedia.Wikipedia “overdominance”, in Collins English Dictionary, 2011–present.