It's a trait common in a single monophyletic group,but not generally found outside of that group.
protostome development
Derived character shared by two or more taxa on a tree.
the answer is C on the pretest: A SYNAPOMORPHY for Plato users
A trait shared by at least two and perhaps more taxa and devolving on common ancestry is synapomorphy. A homologous trait is quite similar. The forelimbs of all tetrapods are devolved from common ancestry and would be traits shared by many taxa and homologous traits. Cladists use the word synapomorphy more to show closer relationships. Pliesiomorphy is the word cladists use to show more ancient relationships.
Animals that use metabolically generated heat to regulate body temperature independently of ambient temperature. Endothermy is a synapomorphy of the Mammalia, although it may have arisen in a (now extinct) synapsid ancestors. Generating internal heat to moderate body temperature, e.g., modern birds and mammals. Warmblooded.
Felines. Retractable claws are found within the suborder Felidae however not all members show them. The Cheetah, for instance, is a prominent member who claws remain out at all times. Other more obscure members, like hyenas, do not have them either.
Mesquite is in the family Fabaceae, also known as the pea or bean family. At one point in the history of plant classification all family names were standerized to all end in "aceae." Before that, the Fabaceae was known as the Leguminosae. Because this is the third most abundant plant family in the world, is very wide spread, and is therefore imortant to people, Leguminosae was chosen to be an exception to the "aceae" rule. Although it was given its new "aceae" name, it is still considered correct to use the old name and you will see it used from time to time. Also, it is useful to use the name Leguminosae because it describes the most prominant identification feature and synapomorphy of the family, which is the leguminous fruit. All members of the Fabaceae are legumes. The word "legume" describes the type of fruit and is the name of plants that bear leguminous fruits. I'm sure you didn't need to know all of this, but the Fabaceae is my favorite plant family!
In some ways yes and in some ways no. So humans are animals.