Sibling larvae of the coral Acropora millepora before metamorphosis (top) and young polyps after metamorphosis (bottom) represent two of the most contrasting family groups obtained by crossing ...

And then there's the acid test. Follwing a full-moon night or two each year, immobile stony corals like acropora millepora release egg and sperm bundles simultaneously in an orgy of mass spawn- ing.

Genetic markers are DNA sequences with known physical locations on chromosomes. They are points of variation that can be used to identify individuals or species, or may be used to associate an ...