change over time in a population
inheriting of a trait that helps an organism survive in it's environment
A natural process resulting in the evolution of organisms best adapted to the environment.
structures that are similar in appearance and function
where 2 species not living in the same environment adapt similar traits
process by which two species evolve in response to changes in each other
breeders control variation of traits
developed the idea of inheritance of acquired characteristics. Any changes that occured from the use or disuse of a trait would be passed on to the offspring. Proved wrong later on.
They found that like how the Earth changes slowly and gradually, it's been around long enough for species to change gradually as well.
All populations are limited by their environment. Resources can't support the growth of the population because they will generally produce more than can be supported.
Four steps of Darwin's Theory of Evolution
Overproduction, variation, selection, adaptation
traces of organisms who lived in the past hurrr
change in genes of populations
appearance of new species over time
formation of new species
movement of individuals into or out of populations. can change the number and types of alleles in those populations.
Parents choose their mates and so there is a limited set of traits that will be passed on
Changes the number and types of alleles as generations go on. Rare though.
Random effects cause differences in the survival and reproduction of individuals. Alleles may become more or less common
One species can split into a bunch of different species.
Gradual changes over time. Large scale changes (new species) require gradual small changes.
An environment might randomly change suddenly so the species adapt super quickly and sometimes new species are formed. Pretty much opposite of Gradualism.
Similar in function but not structure
when two or more species sharing a common ancestor become more different over time
the status of an organism within its environment and community (affecting its survival as a species) -like it's "job" or role