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Articles on Evolution

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Stay away from this, flies. eoghann

How the zebra got its stripes: to ward off flies

Zebras’ stripes have baffled biologists since Charles Darwin. Many hypotheses have been proposed regarding their purpose but, despite hundreds of years of study, there remains disagreement. In an attempt…
No beating around the bush from the Genesis Expo in Portsmouth. ian_rickard

Redacting exam questions on evolution is a slippery slope

Writing good science exam questions is hard. Getting the wording right, making sure that what you are asking about is clear, pitching the question at the right level, takes time, lots of experience and…
The inland taipan is world famous for its venom. Stewart Macdonald

Why are some snakes so venomous?

Australia is world famous for its venomous critters, including its many highly venomous snakes. The snake that holds the popular title of “world’s most venomous” is the inland taipan (Oxyuranus microlepidotus…
Slime on Earth… that’s all there was for a billion years. www.shutterstock.com

Life on Earth was nothing but slime for a ‘boring billion’ years

Evolution of life on Earth began about 3.5 billion years ago but it has not been a constant or continuous process. During the middle years of Earth’s history (1.8 billion to 800 million years ago), evolution…
An predecessor to the tetrapods – the extinct lobe-finned fish Tiktaalik roseae Wikimedia Commons

These genes are made for walking – another step from fins to limbs

It’s one of the most tantalising questions in evolutionary biology: how did our aquatic ancestors first move from water onto land? Thanks to research published today in PLOS Biology, new light has been…
Honeypot ants: living larder. Alex Wild (www.alexanderwild.com)

Even among ants, size matters more than shape

Worker ants are a funny old bunch, of many shapes and sizes. But they tend to get bigger and smaller much more often than evolving entirely new shapes, according to a new study. While most animals juggle…
A juvenile black-eared cuckoo being fed by an adult speckled warbler. David Cook

How birds cooperate to defeat cuckoos

Why help another when you can help yourself? Cooperation is very common in nearly all life, from genes and cells to humans and other animals. However understanding why can be difficult: being selfish seems…
Cane Toads have wreaked havoc in Australia. Could we predict the next invasive species? Flickr/Brian Gratwicke

Darwin’s invasive species theory challenged

New research on invasive species has cast doubt on the prevailing theory developed by Charles Darwin, giving us a new way to predict and model species when they are introduced. Invasive animals such as…
Role reversal: evolution is not the only way to explain gender differences. Linh Do

Women act like men when they switch seats at speed dating

On a TV show or in a movie, if a guy and a girl are at a party and one approaches the other to strike up a conversation, chances are that it was the guy who approached the girl. That is because we have…

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