Definition of misexpression in English:

misexpression

Pronunciation /ˌmɪsɪkˈsprɛʃn/ /ˌmɪsɛkˈsprɛʃn/

noun

Genetics
  • The process or result of altering a gene so as to change its associated character in a phenotype; the incorrect expression of a gene in a phenotype.

Origin

Mid 17th century (in an earlier sense). From mis- + expression.