Viviane Callier

The visual systems of a group of mollusks reveal how future evolution depends on the past.

When mitochondria stop communicating, the biological clock starts winding down.

Unusual proteins that can quickly fold into different shapes provide cells with a novel regulatory mechanism.

In grafted plants, shrunken chloroplasts can jump between species by slipping through unexpected gateways in cells walls.

Even genes essential for life can be caught in an evolutionary arms race that forces them to change or be replaced.