Biology:
* Heterozygote: An individual with two different alleles for a particular trait.
* Heterotrophic: An organism that obtains its nutrients from consuming other organisms.
* Heterostyly: The presence of different flower morphs within a species, with styles and stamens of different lengths.
Chemistry:
* Heterogeneous: A mixture with components that are not uniformly distributed.
* Heterocyclic: A compound containing a ring that includes atoms of at least two different elements.
General usage:
* Heterosexual: A person attracted to people of the opposite gender.
* Heterodox: Holding opinions that are different from accepted beliefs.
* Heterogeneous: A group or mix of diverse things.
* Heteronyms: Words that are spelled the same but have different meanings and pronunciations.
These are just a few examples, and the prefix "hetero" can be used in many other contexts. The key is to remember that it implies difference or diversity.