Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Evolution

QuestionAnswer
What is evolution the change in hereditary features of an organisms gradually over time
Explain what an adaptation is? a characteristics that improves an individual’s ability to survive and reproduce in a particular environment.
Give two examples of an adaptation Long neck, camouflage
What is natural selection organisms with traits best suited are more likely to survive. These organisms will produce more offspring and therefore pass on their dominant their traits.
What does it mean to say “survival of the fittest” The fittest are those whose adaptations match their environment.; their offspring inherit these traits and thus are more likely to survive
Explain Darwin’s contribution to science. Theory of evolution is still accepted today. Realize that the most favorable/dominant trait will be passed on to the next generation. Natural selection & survival of the fittest. Great variation in organisms.
What is a variation? How does variation in a population happen? The appearance of an inherited trait that makes an individual different from other members of the same species.
What evidence did Darwin collect? Fossils, plants, and animals Studied finches and observed characteristics of organisms
What evidence supports the theory of evolution? • Homologous animal parts • Natural selection • Fossils • Survival of the fittest • Adaptation/variation
If you are smarter, faster, healthier this is an example of: Natural selection
Why does variation happen in populations? Variation happens because organisms adapt to their environment over time, reproduce, and pass those traits onto their offspring.
If a dog breeder purposely selects the traits they want when mating dogs, this is known as: Selective breeding or artificial selection
A bat and a human have similar bone structures in their hands and arms. This is known as Homologous (same) structures
According to the theory of evolution, all organisms are believed to be evolved from where: A COMMON ancestor
What do fossils tell us about organisms? Fossils tell a story about what organisms looked like, what they ate, and their most common relative
A giraffe has a long neck so that it can reach the tops of trees. the giraffe has a more "suited" trait for its environment. What is likely to happen with the giraffe? The giraffe is more likely to find a mate, reproduce, and pass this trait on to its offspring.
What does it mean to say that an organism's trait is best "matched" with its environment? Organism's traits and varieties are more likely to allow them a higher chance for survival in their environment
What did the bird beak lab demonstrate? Birds with the best "suited" traits are more likely to survive. Foods less eaten will become over populated.
What did the peppered moth lab simulate? organisms that blend in with their environment are less likely to be eaten by predator, therefore is more likely to reproduce.
Created by: mlugerner