CAMBRIDGE, England, Aug. 3 (UPI) --Statistical analysis has revealed the sexual behavior of creatures from the genus Fractofusus, a type of rangeomorph, was surprisingly complex. In a new study, ...
Biologists are uncovering increasing evidence that females are much more than passive players in the game of reproduction. Examples include ducks with labyrinth-like vaginas that open or close to dead ...
A soft-bodied, fernlike creature reproduced in Earth's ancient oceans about 565 million years ago, making it the earliest known example of procreation in a complex organism, a new study finds. Many ...
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