Evolution 22-23

Where the better adapted organisms survive to pass traits along to offspring.

• Evolution
• Natural Selection
• Extinction
• Artifical Selection

Mutations are a change in what?

• DNA
• tRNA
• genotype
• phenotype

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

Why is the mouse population changing over time?

• The light mice can reproduce more successfully than the dark mice
• The hawks eat more dark mice than light mice because the dark mice taste better
• The hawks eat more light mice than dark mice because they can see the light mice more easily
• The hawks eat more dark mice than light mice because they can see the dark mice more easily

These moths are all the same species. The differences between their wings is an example of ________________

• Natural Selection
• Variation
• Homeostasis
• Extinction

The theory of evolution by natural selection means that what is changing over time?

• The inherited traits of a population.
• The acquired traits of a population.
• Hair color and eye color
• Attractive features.

In recent years "SuperBugs" (bacteria that are resistant to antibiotics) are becoming more and more common. How could natural selection explain this?

• There is genetic variation among bacteria. One variation is being resistant to antibiotics. Those live and continue to reproduce.

• When antibiotics are applied to bacteria, the medication causes DNA mutations so that that they all die instantly.

• We have always had the same amount of superbugs; modern media just discusses them more.

• Superbugs decided to be resistant to antibiotics and continue to live and reproduce.

A large herd of goats lives in a field full of poison ivy.  Some goats are able to eat the poison ivy while others have become sick when they eat it. Over time the herd as a whole will tend to

• Become more likely to eat poison ivy.
• Become less likely to eat poison ivy.
• Not change in the proportion of goats that can and can not eat poison ivy.
• Eat all the poison ivy and leave only plants all the goats can eat.

Organisms with the most beneficial traits will survive.  This is commonly known as

• theory of evolution.
• variations.
• survival of the fittest.
• ecosystems.

A characteristic or feature that increases an organism's ability to survive within a changing environment.

• adaptation
• hibernation
• migration
• Natural Selection