Anole Labs
Adaptive radiation is a process by which organisms diversify rapidly from an ancestral species into a multidude of new forms. In Darwin's Finches they had different beak sizes depending on the food. The anole lizards in the lab showed adaptive radiation in the following ways.
What is they had different leg lengths, different colors, and different tail lengths depending on which niche they occupied?
This is the biological change process by which descendants come to differ from their ancestors.
What is evolution?
These were the islands that Darwin visited.
What are the Galapagos islands?
This is a mechanism by which individuals that have inherited beneficial adaptations produce more offspring on average than do other individuals.
What is Natural Selection?
Convergent evolution is evolution where two species have similar adaptions because the environments they live in are similar. This is seen in the anole lizards in the following ways.
What is you had different lizard populations throughout the caribbean and they all had similar traits because they lived in similar environments?
This was an 18th century naturalists that stated that environmental changes lead to use or disuse of a structure.
Who is Lamarck?
This is the difference in a physical trait.
What is Variation?
This is the ability of a trait to be passed down.
What is Heritability?
True or False:
When looking at the phylogenetic trees, the lizards with similar ecomorphs were more closely related than lizards that shared an island.
What is false, because the phylogenetic trees showed that the lizards sharing an island were more closely related than lizards on different islands with similar adaptions?
These are structures that are similar in structure but have different functions.
What is Homologous Structures?
An ____ is a feature that allows an organism to better survive in its environment.
What is an adaptation?
There is a struggle for survival due to _______ and _____ ______.
What is overpopulation and limited resources?
The anole population that was living on the ground changed in this way when a predator was added to the ecosystem.
What is they started living on the twigs and in the bushes off the ground where the predator could not get them?
A Bird's Wing and a Fly's Wing are known as ____ Structures.
What is analogous structures?
A bird that can easily outcompete other birds for food and that can produce many eggs has a high _____.
What is Fitness?
________ ________ describes evolution toward similar traits in unrelated species.
What is convergent evolution?
This is why when lizard populations with different colored dewlaps come back together they don't mate.
What is speciation? When the lizards are separated and the dewlaps change color in order to attract mates in different environments, when they come back to the original population, they are no longer recognized by the original population as the same species.
An Ostrich's Wings are an example of this kind of structure.
What is Vestigial Structure?
These are the four main principles of the theory of natural selection.
What is variation, overproduction, adaptation, and descent with modification?
______ ______ describes evolution toward different traits in closely related species.
What is divergent evolution?