Gulf killifish have made a stunning comeback in Houston with the help of genetic mutations imported from interspecies mating with Atlantic killifish.

Specialists from the state’s Department of Fish, Wildlife and Parks are working to determine what creature a rancher shot and killed.

A study finds two species of guenon monkeys in Tanzania have been mating and producing fertile offspring for generations.

Genomic analysis reveals wolves and coyotes have hybridized, potentially complicating wolves' protection under the US Endangered Species Act.

Rick Harrison, an evolutionary biologist known for his research on speciation, has passed away at age 70.

DNA from the 40,000-year-old bones of a modern human found in Europe contains Neanderthal genes.

Full genomes of Darwin’s Galápagos finches reveal a critical gene for beak shape and three overlooked species.

Genome fusion at stem graft junctions can generate new plant species.

Species in a tightly knit genus of Old World primates have evolved tell-tale facial characteristics to prevent hybridization, a study shows.