Latest Selection Stories
Mothers win the genetic tug of war by producing more sons with larger fathers and more daughters with smaller fathers.
Two Dartmouth biologists have found that brown anole lizards make an interesting choice when deciding which males should father their offspring.
The unexpected discovery of a new type of genetic variation suggests that natural selection â€“ the force that drives evolution â€“ is both more powerful and more complex than scientists have thought.
Female birds in species that breed in groups can find themselves under pressure to sexually show off and evolve the same kinds of embellishments â€“ like fanciful tail feathers or chest-puffing courtship dances - as males.
Darwin suggested that the action of natural selection can produce new species, but 150 years after the publication of his famous book, 'On the Origin of Species', debate still continues on the mechanisms of speciation.
Males have more pronounced personalities than females across a range of species â€“ from humans to house sparrows â€“ according to new research.
Plants don't mind sharing space with their kin but when they're potted with strangers of the same species they start invigorating their leaves.
Ability of jewelweed to recognize 'relatives' from 'strangers' helps shift resources for growth.
In the animal kingdom, everything is not as it seems. Individuals of the same species can look very different from each other - what biologists term 'polymorphism.'
The tremendous diversity of life continues to puzzle scientists, long after the 200 years since Charles Darwin's birth. However, in recent years, consistent patterns of biodiversity have been identified over space, time organism type and geographical region.
- A handkerchief.
- Specifically— The legendary sweat-cloth; the handkerchief of St. Veronica, according to tradition miraculously impressed with the mask of Christ; also, the napkin about Christ's head (Johu xx. 7).
- In general, any miraculous portrait of Christ.