Population ecology is the study of how populations — of plants, animals, and other organisms — change over time and space and interact with their environment. Populations are groups of ...

Genetic variation describes naturally occurring genetic differences among individuals of the same species. This variation permits flexibility and survival of a population in the face of changing ...

According to this idea, the changes leading to a new species don't usually occur in the mainstream population of an organism, where changes wouldn't endure because of so much interbreeding among ...

A species is a population of organisms that interbreeds and has fertile offspring. Living organisms have descended with modifications from species that lived before them. Natural selection ...

Researchers at the University of Copenhagen have found that the critically endangered regent honeyeater faces hidden genetic ...

Researchers used a computer program to simulate organisms switching between beneficial and harmful environmental factors. The study showed that populations don’t lose their “evolvability ...

WEST LAFAYETTE, Ind. – Purdue University researchers have found that releasing a transgenic fish to the wild could damage native populations even to the point of extinction. A transgenic organism is ...

This remarkable organism has created a diverse ecosystem ... wolves and cougars has led to an increase in these herbivore ...