Analyses of mitochondrial DNA sequences using methods based on coalescent theory suggest that the Greater Prairie–Chicken, Attwater's Prairie–Chicken, and the Heath Hen are as genetically different from each other as they are from the Lesser Prairie–Chicken and the Sharp–tailed Grouse, and that these taxa diverged in the late Pleistocene, between 10,000 and 80,000 years ago (Johnson 2008).
Ainsi, la quasi-élimination est une solution parmi d'autres, et n'exclut pas l'élimination progressive ou l'interdiction de certaines substances lorsque cela se justifieParaCrawl Corpus ParaCrawl Corpus