And for the Denisovans, the population on the whole seems to have been very small for hundreds of thousands of years, with relatively little genetic diversity throughout their history. (scientificamerican.com)
Wildlife with little genetic diversity tend to be more vulnerable to disease. (sciencenewsforstudents.org)
Sequencing the genomes of hundreds of strains of the wine yeast S. cerevisiae has revealed little genetic diversity and high levels of inbreeding. (sciencedaily.com)