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Artículos sobre Reproduction

Mostrando 81 - 100 de 112 artículos

Piercing genitals: good for species diversity

Two species of Tahitian plant insects, known for their traumatic insemination mating system, may be responsible for today’s…
Debate continues over how dinosaurs did the deed. Miroslav Petrasko (

Big bang theory: how did dinosaurs have sex?

Dinosaurs were the largest animals to ever walk Earth, and they ruled the planet for more than 160 million years. The long-necked Argentinosaurus, with back vertebrae almost two metres high, possibly grew…
Girl or boy? Mum has the final say. PA

Mammalian mums control the sex of their offspring

With the royal baby due soon, there is much speculation on whether the family will be welcoming a Prince or a Princess of Cambridge. But perhaps science can tell us the answer, as new research from Stanford…
New research suggests that seeds could now be formed without the biological process of fertilisation. CIMMYT

Seeds without sex – some racy findings on the cloning of plants

Sex without seed. Seed without sex. It’s been said that the greatest gift of science to humankind would be achieving those two goals. Effective contraceptives such as the pill have pretty much nailed the…
Researchers applied sunblock to the plumage of female blue tits to see how males reacted. Marko_K

Blue beauty: why male tits work harder for attractive partners

Rearing young is a costly business that often affects an individual’s own future survival or reproduction prospects. And so it makes sense for individuals to find ways to ensure the energy they spend on…
Humans and spider monkeys are the only primate species without a penis bone. Chris Makarsky

The human penis is a puzzler, no bones about it

The penis. It comes in so many different shapes and sizes … and that’s just in humans. As you would imagine, different species have very different penises. The males in most mammal species, including cats…
Researchers say women may be able to prolong their fertility in future by having an ovarian tissue transplant. bronx

Slowing the biological clock won’t solve family planning dilemmas

In future, women could remain fertile for longer by undergoing an ovarian tissue transplant, according to paper published this week by American and Danish researchers. The Reproductive Biomedicine paper…
Nanas may contribute more than just hugs and kisses. John McNab

What’s the link between caring grandmas and breast cancer?

A recent study shows that mutations in the “breast cancer genes” BRCA1 and BRCA2 – which increase the risks of breast and ovarian cancers among others – also increase fertility. This is an extraordinary…
Lilting voice? No need to look on the dark side. Bisgrafic

Did Darth Vader have a low sperm count?

Few individuals in the Star Wars universe inspired more fear than the Sith Lord, Darth Vader. But beneath the dark exterior, the commander-formerly-known-as-Anakin-Skywalker might have been hiding a dark…
Women will be the key to dealing with the growth in population. Flickr/PhotograTree

Seven billion reasons to be a feminist

SEVEN BILLION PEOPLE: I had better write fast. Sometime between my deadline to submit this story and the time it goes live, the estimated world population will exceed 7 billion for the first time ever…
Boys’ voices break later if their fathers are absent during adolescence, according to new research. Flickr/Tom A

Boys with absent fathers more likely to become young dads

Boys who grow up without a dad around are more likely to reach puberty later, but father their own children earlier, according to a new study. Researchers from the London School of Economics used data…

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