Factors Affecting Gene Frequency Change Due to Migration

Change in gene frequency due to migration will depend upon:

Correct Answer: All the above

Change in gene frequency due to migration depends on all three factors:

1. Gene frequency of migrants — what alleles the migrants bring.
2. Proportion of migrants — how large the migrant group is relative to the base population.
3. Gene frequency of the base population — the starting allele frequencies before migration.

Migration is a systemic force that acts in both large and small populations and can be predicted in both amount and direction. This distinguishes it from random genetic drift, which is unpredictable in direction.