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Natural Selection

Why are variations important in a species? Because they provide chances for adaptations to develop.
What is an adaptation? Improved trait that can be passed on to the next generation
An _____ is a trait or behavior that helps an organism to survive. Adaptation
What are the only traits that can be passed on to offspring? Inherited traits
What is the name that describes a single type of organism? Species
Another word or phrase that means the same as 'survival of the fittest" is Natural selection
The giraffe's neck gradually getting longer over time is an example of ____ taking place. Evolution and/or natural selection
You have two mice that live in a beach area which is mostly tan sand. One mouse is tan and has six offspring while the other is tan and has two offspring.. Which mouse would biologists consider the fittest? The tan mouse with the most offspring would be considered the "fittest" because it would have more chances to pass along its DNA.
You have two lions in an area. One was able to produce five offspring in its life before it died at age 8. Another lion produced 7 offspring but was able to live until it was 15. Which lion would biologists consider the “fittest”? The lion that produced the most offspring would be considered the "fittest".
Define survival of the fittest Organisms that are best suited for their environment will survive.
What is an example of an adaptation of a plant that would help it survive and be more "fit"? Thorns on a cactus would discourage animals from eating it allowing it to survive longer and pass its DNA along.
The change in inherited features of a species over a long period of time is Evolution
Which of the following is the most accurate description of fitness? The ability to survive and produce offspring who can also survive and reproduce
Created by: connie.hambey