Natural Selection
What is overproduction?
this adaptation protects an animal from the artic environment is this.
What is an blubber?
These are similar bone patterns with different functions and suggest a common ancestor.
What are homologous structures?
this is a molecule that is commonly compared to determine the evolutionary relationship between species
What is DNA or RNA?
This is where the oldest fossils are found
What is the bottom layer (strata)?
This ensures that some individuals have traits to survive environmental changes, preventing extinction
What is variation?
this behavioral adaption allows birds to avoid harsh winters and find food, increasing survival and reproduction
What is bird migration?
These are remnants of structures were functional in ancestors but no longer needed
What are vestigial structures?
What is a closer relationship?
What is a mold?
an organism's ability to survive and reproduce, passing traits to the next generation.
What is survival of the fittest?
this determines which traits are "good" or bad for at any given time for a species.
What is the environment?
If two species have the same basic bone arrangement, this indicates...
What is a shared ancestor?
the type of evolutionary evidence that is more reliable then physical appearance.
What is DNA?
Measures isotope decay to calculate exact age in years
What is radioactive dating?
These kill susceptible bacteria.
What are antibiotics?
These type of adaptations involve physical body parts
What are structural adaptions?
stage of development when you share features (gil slits, tail), at the beginning of life and development.
What is embryological development?
this can create a new trait
What is a mutation?
these type of fossils show intermediate stages between ancestral forms and descendants
What are transitional fossils?
This determines which traits are favorable and why some species go extinct and others thrive.
What is selective pressure?
What is Mimicry?
The presence of similar proteins (DNA) in all living things supports the theory of.
What is universal common ancestor?
this helps scientists compare the genetic relatedness of different organisms
What is gel electrophoresis?
This provides evidence for the gradualism vs. punctuated equilibrium theories
What is a fossil record?