Question

question 12
what is a change in the dna sequence?
genetic drift
gene flow
geographic isolation
mutation
population bottleneck
founder effect
frequency
variation

Explanation:

To solve this, we analyze each option:

• Genetic Drift: Random change in allele frequencies, not DNA sequence change.
• Gene Flow: Transfer of genes between populations, not DNA sequence change.
• Geographic Isolation: Separates populations geographically, not DNA sequence change.
• Mutation: Defined as a change in the DNA sequence (can be substitution, insertion, deletion, etc.).
• Population Bottleneck: Reduction in population size, affecting allele frequencies, not DNA sequence change.
• Founder Effect: Genetic drift from a small founding population, not DNA sequence change.
• Frequency: Refers to how often an allele occurs, not a DNA sequence change.
• Variation: Differences in traits, which can result from mutations (but mutation is the direct change in DNA sequence).

So the correct option is the one that directly refers to a change in DNA sequence.

Answer:

D. Mutation