Gender identity describes a person's feelings about what their gender is, whereas gender expression refers to how they communicate their gender externally.

Appearance is integral in self-expression. Who someone is, what they are interested in or how they feel about the world can be communicated by making a choice as simple as what shirt to wear.

What is gene expression and is it possible to alter a person's genetics? Read on to learn more about genes and the different technologies and factors that can change their expression.

Freedom of expression and freedom of speech are fundamental human rights, recognised under international and domestic law.