harmful genetic mutations shrinking of the gene pool decrease in competition increase in adaptations
I gave my students this multiple choice question: The cheetah population around the world has decreased because of poaching and loss of habitat. The surviving population is found to have similar alleles. Which factor is endangering the species' survival the most?

Only one answer is correct among these 4 choices:
- harmful genetic mutations
- shrinking of the gene pool
- decrease in competition
- increase in adaptations

Could you tell me which one is correct?

shrinking of the gene pool