population genetics Population genetics is a subfield of genetics that deals with genetic differences within and among populations, and is a part of evolutionary biology. Studies in this branch of biology examine such phenomena as Adaptation (biology), adaptation, s ...

, extinction probability is the chance of an inherited trait becoming

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

as a function of

time Time is the continuous progression of existence that occurs in an apparently irreversible process, irreversible succession from the past, through the present, and into the future. It is a component quantity of various measurements used to sequ ...

''t''. If ''t'' = ∞ this may be the complement of the chance of becoming a universal trait. This opposing process is also known as proceeding to fixation.

References

Statistical genetics Stochastic processes Population models {{Probability-stub