In addition to the proteins (agglutinogens) existing on your red blood cells, other genes make proteins called agglutinins (a-GLOO-tin-ins) that circulate in your blood plasma. Agglutinins are responsible for ensuring that only the blood cells of your blood type exist in your body.
Older children and teens are unlikely to start calling a stepmom mom or mother partly because of their fear of disloyalty to their biological mom. It is vital for all parties involved -- biological parents and stepmom -- to support their child's choice of what to call the stepmom.
Grammar with 60+ answers. You should only capitalize mom and dad when they are used as a name. Whenever they are preceded by my they should not be capitalized. For example, when writing I love you, Mom, you would capitalize mom because Mom is used as a name. When writing I think my mom is awesome, you wouldn't capitalize mom because in that case mom is used as just a word to describe a familial relationship, and it's not being used as a name. One rule of thumb is that if you can replace mom with an actual name and it still makes sense, then you should capitalize.