"Haldane called this process ""substitution"" or more commonly in biology, this is called ""fixation""."
“ Haldane eɣra tămătǝkwăyt ten s ǝsǝm wan “”anmǝchrăy” meɣ hullăn daɣ bioloji , awen ǝsǝm net “”oɣǝn””