The branch of biology called genetics is involved with the study of heredity and variation. William Bateson first used the word “genetics” in 1906. Small populations have fewer and narrower variances, which results in less variety and less variation in traits.
From a genetic view, the fact that there are so few surviving tigers is concerning for the following reasons:
If they were to die, the gene pool would also die, meaning that many genes would be removed from the gene pool.
Due to the genetic drift phenomena, tigers are only living in small populations; therefore, if a natural disaster kills this small population of tigers, they will suddenly go extinct.
If a disease is spread all across the entire population, the remaining people may be killed out. This could result in the sudden extinction of the tiger species and the permanent loss of their DNA, which would have adverse effect killed out adverse effects on the diversity of nature.