Before you read any further, I want you to take a minute and try to answer the question in the title. Go ahead and write down (or at least think about) the definition that scientists use to determi…
A new species of bigger and super-fertile all-female crayfish originated almost instantaneously because of a genetic accident
How do new species – or completely new types of organism – emerge? Time and separation are the key factors.
Blue ducks (whio) live in both the North and South Island – they’re isolated by distance, but how isolated are they genetically? Physically there are visual differences – the South Island whio is larg
Credit: Copyright P. R. Grant The arrival 36 years ago of a strange bird to a remote island in the Galapagos archipelago has provided direct genetic evidence of a novel way in which new species arise.
Mitonuclear conflict—a struggle between the genes in a cell’s nucleus and those in its mitochondria—might sometimes split species in two.
Cross-species hanky-panky likely common among great apes—including humans
The Rift Valley Lakes of Africa tell the amazing evolutionary story of a small fish inside a species pressure cooker, unlike anywhere else on the planet. Watch this video for free by accessing it at school.
The Congo River’s torrential currents divide fish populations long term