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Graffiti sperm

Why have sex?

... easier, and more efficient, if you could reproduce on your own? This is something of a puzzler to biologists, as ... it seems a no brainer.  In asexual you can do it on your own as a strong independent organism and all of your ... female so, only half of them will be able to make their own babies.  If it's a game of numbers, sooner or later team ...

Figure 2 - Hypothesized reconstruction of the Trichomonas-like infection of a Tyrannosaurus rex. Parasites have plagued vertebrates for a very, very long time. They have co-evolved with us and our evolutionary ancestors over many millions of years.

The Hygiene Hypothesis, Part 3. Are Parasitic Worms Friend or Foe?

... aggressive or inappropriate responses and damages our own tissues in the process. We also learned how helminths ... getting out of hand and causing excessive damage to our own tissues. Mechanisms for this 'immune regulation' include ... that actively attempt to suppress it, purely to aid their own survival. Now, what happens when many of these infectious ...

Star Devouring a Planet

How Massive can a Star be?

... stars, which have less than a tenth as much gas as our own Sun, to giant stars like Betelgeuse, with masses of ... planet like Jupiter, rather than a star that produces its own light. At the opposite end of the mass spectrum, if a gas ...

Finches

The Evolution of Love

... is the point? If the purpose is ultimately to further our own species, why bother with love? Now scientists at the Max ... finch 'speed dating' the birds were able to choose their own mates. Of those which formed partnerships, Ihle took ...

Big Bird

Watching a new species evolve

... on the island. This male bird was much larger and had its own unique song. They knew the bird must have come from one ... are fertile and can mate with other hybrids to form their own species. Although there are a few animal species that we ...

Burying Beetle

The better beetle parent dies younger

... the parents were removed, leaving the larvae to their own devices. This was the "bad" parent group.  Larvae that ... of this this food they share with the larvae against their own needs to cover their personal cost of parenting.  Paired ...

Hearts

What is the purpose of sexual reproduction ?

... No mess, no fuss, just pure transmission of your own genetic material! Many primitive animals do it every day. ... in the gene pool allowing the transmission of 50% your own and 50% your partner's genes to your young. The point of ... of young we increase the chances of propagating our own genes successfully. What's Love got to do with it? OK. ...

The Superb Blue Fairy Wren is a small Australian Passerine of the fammily maluridae

Password Passed Down Before Hatching

... the egg. t's important for a Fairy-wren to recognise its own young because they are subject to parasitism by cuckoos - ... are added to the nest at a later stage than the wren's own eggs, they are therefore exposed to fewer incubation ...

Ant evolutionary conundrum

... face of evolution, because workers have to sacrifice their own opportunity to reproduce for the overall good of the ... several males, workers would still prefer to lay their own eggs. Chris - What is the actual status quo though? Does ...

The Red Queen's race

Evolution Through the Looking Glass

... around it with animals and plants each having their own evolutionary niche. However, this view presents a bit of ... as they are known to kill offspring that aren't their own. So from a theoretical perspective, reproduction without ...

Chris Smith interviews Professor Lee Berger in the Malapa cave

Sediba - Exploring Human Origins

... but with many features that are tantalisingly like our own.  That block of stone was lying adjacent to a hole in ... biologists from any mammal.  But to see it in our own lineage is incredibly exciting. The dentition, we begin ... then, it could be that sediba sits there on its own, it evolved some of the traits we've got for the very ...

From textbooks, to peer reviewed papers...

Steve Jones - The Selfish Gene at 40

... its medium term impact. I should also say perhaps in my own defence that I didn't read the Origin of Species which I ... or eight cousins. The point was that he would destroy his own genome by drowning in the Thames. But if he saved eight ...

Specimen of Oxynoe olivacea feeding on Caulerpa racemosa.

How does evolution produce new genes?

... gets hold of those chloroplasts and puts them into its own skin and keeps them alive so the slug can also use the ... from the algae in order to power those chloroplasts in its own cells, and the only way researchers think that could ...

Early Homo jawbone

Earliest human fossil found

... this jaw in terms of what we now understand about our own origins and our ancestor's origins? Bill - I think we can ... of the line leading directly to Homo sapiens , our own species, split off from a more primitive Lucy-like ...

William FW25 F1 Car

The Cambridge Science Festival

... Jim - It's extremely popular. And we've got building your own fantasy seeds, which you can use to build various motifs ... them out, they're toasting them and we've even got our own tasting panel so they can try different mix and brands of ...

Bombardier Beetle, Brachininae sp., Orange County, North Carolina, United States. Length 13 mm.

Creationism vs. Science

... Bible in evolutionary terms? Douglas Adams - who owed his own conversion to "radical atheism" from Christianity to an ... However, the realm of science has produced its own intriguing suggestions for creationism. Professor Martin ...

hero

Altruism: would you risk your life for a stranger?

... examples of instances when an individual has risked their own life to save someone else. And although this may seem ...

Dinosaur

Are chickens and dinosaurs related?

We put Gontse's question to our very own Georgia Mills. Georgia - Well, the short answer there is ...

A Rebellion Against Science...

... throws out her trust and belief in science and goes her own way... Rebellions come about when beliefs or rules are ...

Plant

'Talking' Plants

... Tech have found out that parasitic plants have their own special way of communicating with their hosts. Their ...

Primates grooming

Why are there apes in the zoo?

... about 5 million years ago and we've all evolved in our own different ways since then. It's quite an interesting ...

Burying Beetle

Good beetle parents die younger

... published this week show that beetles can sacrifice their own fitness for the good of their offspring. Rosalind Davies ...

Desert footprints

Climate predicts religious beliefs

... the social glue hypothesis came to Carlos Botero in his own way. He was working at the National Evolutionary ...

Pile of poo

What is disgust?

... like sexually transmitted disease. That's one view. My own view with my colleagues, McCauley and Haidt is that ... or not. Hitler's sweater which is a thing that we don't own but we use it in describing it. It's something that ...

Tickle

Why do we laugh?

... to laugh if you're with somebody than if you're on your own and you'll laugh more if you like those people, or if you ...