Given below are two statements.
Statement I: Our immune system can distinguish between self and non-self molecules.
Statement II: Sometimes, due to genetic and other reasons, our immune system attacks self-cells.
In the light of the above statements, choose the most appropriate answer from the options given below.

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Statement I is correct, but statement II is incorrect.

Statement I is incorrect, but statement II is correct .

Both statement I and statement II are correct.

Both statement I and statement II are incorrect.

answer is A.

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Detailed Solution

Higher vertebrates can distinguish foreign molecules as well as foreign organisms. Sometimes, due to genetic and other unknown reasons, the body attacks self-cells. This results in damage to the body and is called autoimmune disease. Rheumatoid arthritis is an example of auto-immune diseases.

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