Why study evolution?
Evolution is the basic context of all of the biological sciences
how extant (existing today) organisms got to be the way they are
essential framework for organizing facts and making predictions
Evolutionary explanations answer key questions in the biological sciences
Answers questions of why
Allows scientists to interpret data
Intraspecific variation: variation among individuals of the same species
Interspecific variation: variation among species
(question on this)
Evolutionary explanations have practical application in modern life
Eg. microbial resistance to antibiotics
Evolutionary theory crosscuts many disciplines
Development of new methods and concepts
The number of offspring an individual produces and rears to reproductive age an individual’s
genetic contribution to the next generation
(having them survive until the age where they can reproduce)
(survival of the fittest)
Pertaining to natural selection, a measure off relative reproductive success of individuals.
Fitness can be measured by an individual’s genetic contribution to the next generation compared to
that of other individuals.
The terms genetic fitness, reproductive fitness, and differential reproductive success
are also used.
Forces in the environment that influence reproductive success in individuals.
(climate, seasonality’s, food sources)
(do not have to b