Practice Mutation (4.7) - Principles of Inheritance and Variation - CBSE 12 Biology

Practice: Mutation

Lesson 4.7Principles of Inheritance and Variation

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8 questions

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6 sample questions

Question 1.
What is a mutation?
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Think about how something can change its genetic instructions.
Question 2.
Define a mutagen.
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Consider examples like chemicals or radiation.
3Question 3.
What is a point mutation?
- A mutation affecting multiple base pairs.
- A mutation affecting a single nucleotide.
- A mutation that does not change the genotype.
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Think about the smallest unit of DNA that can be modified.
4Question 4.
True or False: All mutations are harmful to organisms.
- True
- False
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Consider examples of beneficial mutations in nature.
Question 5.
Suppose a mutation occurs in a gene encoding an enzyme responsible for a metabolic pathway. What would be the potential consequences of this mutation? Discuss two possible outcomes.
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Consider how changes in enzymes can ripple through metabolic pathways.
Question 6.
A population of bacteria is exposed to a mutagenic substance. Discuss how mutations might influence the survival and reproduction of this population.
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Think about natural selection acting on a population with new traits.

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