Why is genetic homozygosity dangerous to a nearly extinct species?

Genetic homozygosity can be dangerous to a nearly extinct species because it reduces genetic diversity, which is crucial for adaptability and resilience to environmental changes, diseases, and other stressors. With a limited gene pool, the population may face inbreeding depression, leading to a higher likelihood of genetic disorders and reduced fertility. This lack of variation can ultimately hinder the species' ability to survive and recover, making them more vulnerable to extinction.