Impacts of Overfishing Practice Test

Population bottlenecks from overharvest reduce effective population size, increasing inbreeding and loss of alleles through genetic drift.

Reduced predation increases population size, which necessarily decreases genetic diversity because more individuals share fewer alleles.

Higher mutation rates caused by fishing gear introduce harmful alleles, which increases genetic diversity and stabilizes populations.

Increased gene flow from distant populations always decreases genetic diversity by homogenizing alleles across the entire species range.