If fertility had a shape, this would be it. Scientists have figured out the exact shape of part of a protein that sits on the outside of the egg and aids in fertilization. The results, which may ...

Failure of chromosomal organization within human egg and sperm cells result in miscarriages and infertility. However, the mechanisms controlling these processes are not understood. The discovery of a ...

Five donated ovaries were used to carry out genetic mapping for the study - STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY RF Artificial ovaries are on the horizon after scientists created the first ...

To enable our fingernails to grow or new skin to form and heal an injury, our cells make copies of themselves — exact duplicates containing the same DNA, the combination of 46 chromosomes that makes ...

British scientists believe they have found the answer to an ages-old question: Which came first, the chicken or the egg? Scientists cracked the puzzle after discovering that the formation of eggs is ...

In 2011, Chilean scientists exploring Antarctica found a strange, deflated, football-shaped object on Seymour Island and took ...

This is a preview. Log in through your library . Abstract Centrifuged, unfertilized eggs of the sea urchin, Arbacia punctulata, have been studied with the electron microscope. Subcellular particles ...

Investigators have employed mutant mice to study how the accumulation of genetic errors is managed during egg and sperm formation. Sometimes the best way to understand a biological process is to ...

A nesting trace preserved in alluvial floodplain deposits in the Upper Cretaceous Two Medicine Formation at the Willow Creek anticline in north-central Montana contains four crushed theropod eggs ...