Glossary

cross

To crossbreed; an organism produced by crossbreeding; a hybrid

Used in 58 species profiles

crossbreed
An organism with parents of two different breeds, races, varieties, or species; the process involved in producing such an organism.
F1
Term used in the fields of genetics and selective breeding in reference to the first filial generation, i.e., hybrid offpsring, of a cross between two distinctly different parental lines. Often used in aquarium literature to refer to offspring of F0 parents whether of the same species or not.
F2
Offspring of the second filial generation, resulting from a cross between F1 individuals. Future such generations are termed F3, F4, etc..
hybrid
Organism resulting from a natural or artificial cross between genetically-unlike individuals.
outcrossing
A cross between relatively unrelated individuals; the introduction of unrelated genetic material into a breeding line. Often used to raise or maintain genetic diversity.