In these cases, chimerism may manifest as the presence of two sets of DNA, or organs that do not match the DNA of the rest of the organism. In some cases, hermaphroditic characteristics, in other words, having both male and female sex organs, can be signs of chimerism.
A cognitive bias refers to a systematic pattern of deviation from norm or rationality in judgment, whereby inferences about other people and situations may be drawn in an illogical fashion. Individuals create their own subjective social reality  from their perception of the input.
Confirmation bias, also called myside bias, is the tendency to search for, interpret, prefer, and recall information in a way that confirms one's beliefs or hypotheses while giving disproportionately less attention to information that contradicts it.