Point mutation arises due to change in

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(B) point mutation is a type of mutation that causes a single nucleotide base change,insertion,or deletion of the genetic material,$DNA$ or $RNA$. Spe

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Single base pair of $DNA$

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(B) point mutation is a type of mutation that causes a single nucleotide base change,insertion,or deletion of the genetic material,$DNA$ or $RNA$. Specifically,a mutation that occurs due to a change in a single base pair of $DNA$ is known as a point mutation. $A$ classic example of this is Sickle-cell anaemia,where a single base pair substitution ($GAG$ to $GTG$) in the gene for $\beta$-globin results in the replacement of glutamic acid with valine in the haemoglobin protein.

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Assertion $(A)$: Mutation results in changes in genotype and phenotype of an organism.
Reason $(R)$: Mutation leads to alteration of $\text{DNA}$ sequences,i.e.,variations in $\text{DNA}$.
Choose the correct answer from the options given below.

What is point mutation? Give one example.

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