hybrid vigor

noun 0.916

heterosis

noun 0.715

hybridism

noun 0.637

hybridity

noun 0.598

hybridization

noun 0.570

hybrid

noun 0.560

cross-breed

noun 0.557

vigour

noun 0.549

crossbreeding

noun 0.538

cross-breeding

noun 0.534

overdominance

noun 0.534

crossbred

noun 0.532

hybrid speciation

noun 0.531

vim and vigor

noun 0.520

crossbreed

noun 0.518

mixed parentage

noun 0.517

outbreeding

noun 0.510

nonhybrid

noun 0.504

monohybrid

noun 0.501