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Question: Answered & Verified by Expert
In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be:
BiologyPrinciples of Inheritance and VariationNEETNEET 2004
Options:
  • A $\mathrm{B}$
  • B $\mathrm{O}$
  • C $\mathrm{AB}$
  • D $\mathrm{A}$.
Solution:
2350 Upvotes Verified Answer
The correct answer is: $\mathrm{AB}$
ABO Blood group system
\(\begin{array}{|c|c|c|c|}
\hline \begin{array}{c}
\text { Blood } \\
\text { group }
\end{array} & \begin{array}{c}
\text { Antigen(s) } \\
\text { present on } \\
\text { the red blood } \\
\text { cells }
\end{array} & \begin{array}{c}
\text { Antibodies } \\
\text { present } \\
\text { in the } \\
\text { serum }
\end{array} & \begin{array}{c}
\text { Geno- } \\
\text { type(s) }
\end{array} \\
\hline \text { A } & \text { A antigen } & \text { Anti-B } & \begin{array}{c}
\text { AA or } \\
\text { AO }
\end{array} \\
\hline \text { B } & \text { B antigen } & \text { Anti-A } & \begin{array}{c}
\mathrm{BB} \text { or } \\
\text { BO }
\end{array} \\
\hline \mathrm{AB} & \begin{array}{c}
\text { A antigen and } \\
\text { B antigen }
\end{array} & \text { None } & \mathrm{AB} \\
\hline \mathrm{O} & \begin{array}{c}
\text { B antigen }
\end{array} & \begin{array}{c}
\text { Anti-A and } \\
\text { Anti-B }
\end{array} & \mathrm{OO} \\
\hline
\end{array}\)
Related Theory
The ABO blood types were discovered by Karl Landsteiner in 1901.

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