Bio Evolution

Pangaea's separation explains why certain animals are only found in certain places on Earth

This must be present in genes in order for natural selection to occur

Bone structure similar due to shared ancestry

Body parts with similar function, but different structure

Non-functional structures similar to functional structures in a related species

Number of offspring contributed to the next generation

A trait that contributes to fitness by providing an advantage

Selective breeding achieved through human intervention

Variation in the ability to find a mate leads to offspring with advantageous traits

Change in allele frequency in a population over time

The ordered sequence in which fossils appear in rock layers

Fossilization where the body remains intact; frozen, preserved in amber, tar pit death

Fossilization where bone is replaced with carbon film

Fossilization where soft mud hardens around a dead organism, creating a:

Evolution due to chance, not natural selection

A subset of a larger population starts a new colony, limiting the size of the gene pool

The living population falls rapidly in a short period of time, limiting the size of the gene pool

Independent evolution of similar adaptations, not due to a common ancestry; bats, birds, insects

Genetic variation in a common ancestor leads to the formation of a new species; wolves evolved into both foxes, and dogs

The number of differing nucleotides in organisms' genetic codes indicates how closely related the species are

Process by which individuals with advantageous traits in a particular environment have higher reproductive success