The most popularly known blood grouping is the ABO group. It is named ABO not ABC, because O in it refers to having……
a) over-dominance of this type on the genes for A and B types
b) one antibody only – either anti-A or anti-B on the RBCs
c) no antigens A and B on RBCs
d) other antigens besides A and B on RBCs
Multiple alleles are produced by……….
a) translocation
b) mutation
c) crossing over
d) pandemic
Explanation: sudden heritable change in DNA is called mutation
Some genes may have as many as 300 alleles, but individuals have only two of those alleles. Why?
a) individuals have two biological parents
b) individuals are bi-zygotic
c) individuals have less DNA as compare to their parents
d) all of these
Explanation: each individual receives one allele from father and other from mother
ABO blood group system was discovered by……….
a) Carl Correns
b) Gregor Mendel
c) T.H. Morgan
d) Karl Landsteiner
Explanation: he discovered it at University of Vienna in 1901. He received Nobel prize for his discovery in 1930
Which of the following have ABO blood group?
a) human
b) apes, chimpanzees and baboons
c) gorillas
d) all of these
Explanation: all of these are primates having ABO blood group system
How many principal types of ABO blood group are found in humans?
a) two
b) three
c) four
d) six
Explanation: A, B, AB and O
