Question

Potential danger to population greatly reduced in number is :

• A. Hardy-Weinberg disequilibrium
• B. Reduced gene flow
• C. Tendency towards assortative mating
• D. Loss of genetic variability

Answer 1

Answer: (D)

Loss of genetic variability

• Reductions in population size and absence of gene flow can lead to reductions in genetic variability, reproductive fitness, and a limited ability to adapt to environmental change increasing the risk of extinction.
  
• Island populations are typically small and isolated, and as a result, inbreeding and reduced genetic diversity elevate their extinction risk.
  

So, the correct answer is 'Loss of genetic variability'