17-4 Patterns of Evolution

What's one example of coevolution?

• Bee's and wolves

• Bee's and flowers

• Whales hunting krill

• Humans hunting whales

What happens in coevolution?

• two species evolve in response to one another

• one species gain increase fitness while another doesn't

• two species go extinct at the same time

• one species hunts another

What is convergent evolution?

• The process by which two species evolve in response to changes in each other over time.

• Patterns of long, stable periods interrupted by brief periods of more rapid change.

• The process whereby organisms not closely related (not monophyletic), independently evolve similar traits as a result of having to adapt to similar. environments or ecological niches.

• Changes in genes for growth and differentiation during embryological development can produce in body size and shape.

Why is convergent evolution problematic?

• Because it is

• Analogous structures may appear similar and perform similar functions, making it seem that two species are closely related.

• These species will look too different that no one can tell if they are the same species.

• It causes species to go extinct.

What is the opposite of punctuated equilibrium?

• Gradualism

• Hardy-Weinberg Equilibrium

• Evolution

• Extinction

The easiest way to describe punctuated equilibrium is?

• Long, gradual change overtime

• Short, brief change after long periods of equilibrium

• Short, brief change after years of evolution

• Medium change over short time

Developmental genes...

• Change body size

• Change eye size

• Change wing size

• All of the above

Developmental genes change through evolution to help species...

• Fight creatures

• Adapt to their environment

• Mate better

• Destroy and opposing population

In adaptive radiation, groups of organisms fill different ecological _______________.

• Niches

• Habitats

• Species

• Specializations

Birds with different shaped beaks is an example of __________________.

• Mutations

• Directional selection

• Adaptive radiation

• Gene shuffling