____________ is the preserved remains or traces of ancient organisms

____________ is the process by which organisms that are most suited to their environment survive and reproduce most successfully; also called survival of the fittest

____________ is how well an organism can survive and reproduce in its environment

____________ is change over time; the process by which a modern organisms have descended from ancient organisms

___________ are the structures that are similar in different species of common ancestry

___________ is the structures structure that in inherited from ancestors but has lost much or all of its original function

___________ are the body parts that share a common functions, but not structure

___________ is the number of times that an allele occurs in a gene pool compared with the number of alleles in that pool for the same gene

___________ is the formation of a new species

___________ is when a change in allele frequencies as a result of the migration of a small subgroup of a population

___________ is when a a change in allele frequency following a dramatic reduction in the size of a population

___________ is when processes that can lead to populations separating from each other, preventing mating

___________ is the random change in allele frequency caused by a series of chance occurrences that cause an allele to become more or less common in a population

___________ is all the genes, including all the different alleles for each gene, that are present in a population at any one time

The arm bones in mammals (humans, bats, and whales) all have a very similar bone structure, they are said to be ___________________________.

A sink is a snake like creature that slithers along the ground, but has very tiny legs that serve no function, these legs are an example of a __________________________________.

___________________ is the mechanism for evolution, and it says that organisms that are best adapted to their environment are most likely to pass on their genes.

A ____________________ can be used to support evolutionary relationships because the old and extinct specimen can be compared to current living species.

Poaching in the African Savannah has led to a severe ___________________________ of the Cheetah population, because their population size was dramatically reduced, leading to less genetic diversity.

The wings of a bird and the wings of a bee are __________________, they have the same function but different function.

An Emperor Penguin has high ____________, because they are able to survive and reproduce in their Antarctic Environment.

A pond has one species of Catfish, but the water level decreases and the pond becomes two separate ponds, this will lead to ______________________, because the catefish will become two different species.

A species of butterflies from mainland California migrate to a small island off the coast. This is an example of the _________ because a small subset of the population migrated.

Populations __________________ over time. Individual organisms can not, and this process takes a very long time.