Not carried on the X chromosome; pattern baldness
Cause the production of antibodies
Determines the effects of genetics vs. environment on identical twins
Type AB can receive blood from any other group
Identical
Cause the production of antibodies
Nonidentical
ANTIGENS
ANTIGENS
UNIVERSAL RECIPIENT
FRATERNAL
BLOOD TYPES
MALE
SEX-LINKED recessive trait
FEMALE
PATERNAL
TWIN STUDIES