A popliteal cyst, also known as a Baker's cyst, is a fluid-filled swelling that causes a lump at the back of the knee.
the smallest category is species but from largest to smallest it will be: kingdom Phylum class order family genus and species and you can come up with another word for it to hâ¦elp you with it. so yeh there you go.
Genus and Species are the two least inclusive taxonomic groups that scientist classify living things in (species is the least inclusive. Genus and Species are both part of the scientific name of an organism. i.e. Micropterus salmoides (largemouth bass).