Genetics — definition check: What is a mutation in classical genetics? Frame the answer in terms of heritability and changes to genetic material, not recombination or environmental effects. Choose the correct definition.
General Knowledge
Biology
Difficulty: Easy
Choose an option
-
AA sudden heritable change in the genetic material (DNA) of an organism
-
BA temporary change in phenotype due to environment (no DNA change)
-
CThe reshuffling of existing alleles during meiosis (recombination)
-
DA change in behavior due to learning and experience
Answer
Correct Answer: A sudden heritable change in the genetic material (DNA) of an organism
Explanation
Concept / ApproachA mutation is a heritable alteration in DNA (gene or chromosome), not merely a transient environmental effect or ordinary recombination.
Common pitfalls
- Confusing gene mutation with recombination or phenotypic plasticity.
Final AnswerA sudden heritable change in DNA is a mutation.