Preserved remains of ancient organisms
What are fossils?
Change in a species over time
What is evolution?
Development of new species from existing species over time.
What is speciation?
The development of many species from one species over a relatively short period of time.
What is adaptive radiation or divergent evolution?
The bird studied by Darwin which helped shape his theory of natural selection.
What are Galapagos finches?
Similar body parts inherited from a shared ancestor, indicating relationship
What are homologous structures?
A characteristic or trait that helps an organism survive in its environment
What is an adaptation?
When populations are separated by a physical barrier?
What is geographic isolation?
What is coevolution?
Organisms with fur and mammary glands
The least related species to humans given a comparison of hemoglobin B structure
What is a fish?
Process whereby organisms best suited to their environment survive and produce more offspring, passing on successful traits
What is natural selection?
The other term for reproductive isolation?
What is sympatric isolation?
Unrelated species developing similar traits due to comparable environments
What is convergent evolution?
Early life on earth was ________and________.
What is simple and unicellular?
Found at branch points of a phylogenetic tree, representing species in the past
What is a common ancestor?
According to principles of natural selection, this must exist within a population for change to occur.
What is variation (genetic differences)?
The reason why a mule is infertile.
What is the wrong number of chromosomes due to reproductive isolation?
Some species of mongoose are immune to venom and thus able to hunt certain venomous snakes like cobras. This is an example of
What is coevolution?
The cause of 13 different species of birds on the Galapagos islands
What are different food resources and habitats of various islands?
The closest relative to animals on this tree
What are fungi?
A random change in DNA, resulting in differences in a population.
What is a mutation?
Humans chop down and clear large areas of forest to make way for farmland, ranches, and new neighborhoods. A population of beetles native to that forest is now split in two, with each group unable to continue reproducing with the other. This is an example of
What is geographic (allopatric) isolation?
What is [answers may vary]?
Factors that limit a population, like food or predators, leading to certain individuals being better adapted to a given environment.
What are selective pressures or selection factors?