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Frequency of an allele in an isolated population may change due to : -
A
Genetic drift
B
Gene flow
C
Mutation
D
Natural selection
Detailed Solution
In an isolated population there is no gene flow (no migration in or out).
In a small isolated population, allele frequencies can change by chance alone from one generation to the next. This random change is called genetic drift (e.g. founder effect).
Mutation and natural selection can also change allele frequencies, but the change characteristic of small isolated populations is drift.
So, as per the answer key, allele frequency in an isolated population may change due to genetic drift.
In a small isolated population, allele frequencies can change by chance alone from one generation to the next. This random change is called genetic drift (e.g. founder effect).
Mutation and natural selection can also change allele frequencies, but the change characteristic of small isolated populations is drift.
So, as per the answer key, allele frequency in an isolated population may change due to genetic drift.