Reproduction

Team Cracks Eggs for Science

Champaign, IL — Avian brood parasites lay their eggs in the nests of other bird species, forcing the hosts to do the hard work of raising the unrelated young. A team of scientists wanted to simulate...

How Sperm Remember

Montreal, Canada — It has long been understood that a parent’s DNA is the principal determinant of health and disease in offspring. Yet inheritance via DNA is only part of the story; a father’s...

Study Reveals How Egg Cells Get so Big

Cambridge, MA — Egg cells are by far the largest cells produced by most organisms. In humans, they are several times larger than a typical body cell and about 10,000 times larger than sperm cells. There’s...

Plastic contaminants harm sea urchins

Exeter, UK — Plastics in the ocean can release chemicals that cause deformities in sea urchin larvae, new research shows. Scientists soaked various plastic samples in seawater then removed the plastic...

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