Assertion: Mutation is sudden change in the genetic material.
Reason: Variation is useful for the survival of species overtime.
a) Both A and R are true, and R is correct explanation of the assertion.
b) Both A and R are true, but R is not the correct explanation of the assertion. c) A is true but R is false.
d) If both A and R are false.
Answers
Answer:
b
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Answer:
b) Both A and R are true, but R is not the correct explanation of the assertion.
Explanation:
A sudden change in a genetic character is called a mutation. Mutation is a phenomenon of changes in DNA. This leads to the development of new traits that can be inherited. This is due to an error during DNA replication or DNA damage
Explanation for assertion:
A mutation is a sudden, heritable change that occurs in DNA or RNA. The gene structure changes at the nucleotide level and this change becomes hereditary, i.e. it can be passed from one generation to another. This leads to the development of new traits that can be inherited. This is due to an error during DNA replication or DNA damage not because of variations.
Explanation for reason:
Variation is necessary for the survival of species because variation makes species better adapted to survive and grow in changing environmental conditions. Adaptations help species overcome adversity associated with extreme conditions in their environment. Therefore, they are better able to survive and reproduce to pass on their genes to their offspring. During meiosis, a variation occurs that causes gametes to form in the body. This maintains the population and thus the genetic material of each generation is varied.
Therefore, the correct option is (b).
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