Cell division that produces reproductive cells in sexually reproducing organisms

A theory stating that the earth's surface is broken into plates that move.

largest organ

part of the nervous system

The layer of hot, solid material between Earth's crust and core.

A piece of glass that separates white light into colors of the spectrum.

A cell structure that contains nucleic acids, the chemical instructions that direct all the cell's activities.

Definite shape and volume

A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together

A condition that appears only in individuals who have received two copies of a mutant gene, one copy from each parent.