Research into _________ revealed that members of the Lemba ethnic group in Africa are indeed genetically related to Semitic populations.
a. haplotypes
b. the Duffy blood group
c. Y chromosome markers
d. blood systems
Question 2
A child may be born with erythroblastosis fetalis if __________.
a. there is maternal-fetal incompatibility of the rhesus system
b. both the mother and child have type A blood
c. there is maternal-fetal incompatibility of the ABO system
d. both the mother and child have Rh-negative blood
