A mutation

A scientist who reports a measurement is also supposed to say how accurate the number is. There are rules for calculating the standard error

When one species transforms into another across time.

In politics, an arms race is when two countries both improve their military power, each trying to get ahead of the other. In evolution, the phrase is used to describe two creatures co-evolving to keep [..]

Biochemistry is the branch of chemistry that deals with the the chemicals and chemical processes found in living things. So, although it is partly in the world of biology, it is also connected to chem [..]

In a cell with a nucleus, most of the the genes

When one species branches into two species across time.

A substance which makes some chemical reaction happen faster, but is not itself consumed in the reaction.

See biological classification

Modern bacteria reproduce by splitting in two - that is, they have asexual