Assertion: mammoth's population | /r/HasProperty | small
Facets:
value: very
type: DEGREE
Source sentences:
text: This population was so isolated and so small that it didn't have much genetic diversity, the researchers wrote in the new study.
text: In fact, the case of the Wrangel Island mammoths is a cautionary tale about what can happen to a population that is too small and therefore lacks genetic diversity, he said.
text: It makes sense that the researchers would find an accumulation of deleterious mutations in a population that was very small," said Beth Shapiro, an evolutionary biologist at the University of California, Santa Cruz, who was not involved in the new study.
text: Before their extinction, the Wrangel Island mammoths had accumulated numerous genetic defects due to their small population; in particular, a number of genes for olfactory receptors and urinary proteins became nonfunctional, possibly because they had lost their selective value on the island environment.