One factor must be dominant and one factor recessive in each individual. attached earlobes (ee). A couple both have unattached earlobes. Both notice that one of their parents on both sides has attached earlobes (ee). Therefore, they correctly assume that they are carriers for attached earlobes (Ee).
Blood group AB because the child’s father have pathogen a and mother has both pathogens hence the child will have both pathogen from both parents hence blood group will be AB
