Evolution & Natural Selection

The changes of species over time

• Embryonic 
• Natural selection 
• Mimicry 
• Evolution 

English natural scientist who formulated a theory of evolution by natural selection (1809-1882).

• Darwin
• Wallace
• Linnaeus
• Lamarck

An original species from which all other species evolved.

• Fossil
• Natural Selection
• Descendant
• Common Ancestor

Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest.

• Extinction
• Speciation
• Natural Selection
• Artificial Selection

Which IS NOT used as evidence for evolution?

• Fossils

• Natural Selection

• Early Development/Embryos

• Body Structure/Anatomy

• DNA/Proteins

Some organisms that share a common ancestor have features that have different functions, but similar structures.  These are known as

• vestigial structures
• analogous structures
• homologous structures
• fossil structures

An anatomical feature that no longer seems to have a purpose in the current form of an organism

• Homologous structure

• Analogous structure

• Vestigial structure

• None of the above

A  population of cockroaches was sprayed with an insecticide.  Some cockroaches survived and produced a population of cockroaches that was resistant to this spray.  What can BEST be inferred from this example?

• species will adapt no matter what the environment
• environment has no effect on the survival of an organism
• Individuals with favorable variations survive and reproduce
• Insecticides cause mutations that are passed on to the next generation

A slight difference in an inherited trait between individual members of the same species.

• variations
• adapatations
• homologous structures
• analogous structures

Which of the following is a factor in natural selection?

• Individuals of species compete with one another to survive.

• All species are genetically diverse.

• Individuals better able to adapt to changes leave more offspring.

• All of the above.