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Determine the correctness or otherwise of the following Assertion[ a] and Reason [r]
Assertion: An antigen recognized by one immunoglobulin subtype is not recognized by any other subtype.
Reason: Immunoglobulin subtypes differ from each other body in the variable and in the constant regions.
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- Both [a] and [r] are true and [r] is the correct reason for [a]
- Both [a] and [r] are true but [r] is not the correct reason for [a]
- Both [a] and [r] are false
- [a] is true but [r] is false
Correct Option: C
The immunoglobulins can be divided into five different classes, based on differences in the amino acid sequences in the constant region of the heavy chains. The valency of Immunog-lobulin refers to the number of antigenic determinants that an individual immunoglobulin molecule can bind. The valency of all immuno-globulins is at least two and in some instances more than that.
