A unit of scientific classification that comes after order but
before genus in terms of biological relationships.
Fertility
Ability to reproduce.
The process by which male and female sex cells (gametes) unite to
form a zygote or new individual.
The simplest form of asexual reproduction that involves the division
of a single organism into two compete organisms.
A type of ecosystem generally described as a large area of land
covered with trees.
The remains of a plant or animal that lived in the past.
A record of all known (past and present) fossils.
Form of genetic drift that occurs when allele frequencies in a group
of migrating individuals are, by pure chance, significantly different than that of their
population of origin, and this group goes on to develop into a distinctly different
species. Also known as Founder's Principle.
Fundamental Theorem of Natural Selection
A theorem developed by Sir Ronald A. Fisher stating that the rate of
evolution in a population increases with greater genetic variability and decreases with
lower genetic variability.
Simple nongreen plants that lack chlorophyll, the green matter that
higher plants use to make food.
The thick growth of hair that covers the skin of many kinds of animals.