homozygous recessive organisms will show the recessive trait
intractability is not trait. avpr_1a_gene is not human_gene. uncommunicativeness is trait. rap1a is not human_gene. recessive_gene is gene. homo_erectus is not homo. rap1a is human_gene. recessive_gene is not gene. homopterous_insect is not insect. intractability is trait.