Biology Final  What does "biogeography" mean? Where did the ancestors of horses originate? What list of characteristics do all mammals share? Which character or feature do most life on earth share? What is the term for a structure that serves little or no purpose today and is simply a holdover from evolutionary pressure in the past? Which are examples of evolution that we observe constantly around the world? There is a bacteria that infects arthropods

1. What does "biogeography" mean?

the geographic distribution of species

2. Where did the ancestors of horses originate?

North America

3. What list of characteristics do all mammals share?

mammary glands, fur,

4. Which character or feature do most life on earth share?

DNA, reproduction, common ancestor

5. What is the term for a structure that serves little or no purpose today and is simply a holdover from evolutionary pressure in the past?

vestigial structures

6. Which are examples of evolution that we observe constantly around the world?

The evolution of drug resistant pathogens, homology

7. There is a bacteria that infects arthropods. They infect the cells, and can only be passed on to offspring through the egg cell. They cannot be passed on by contact or any other means except from the egg cell. In one species of rolly polly bug, they actually change the sex ratio to have more females to males.

They can only be passed on through females.

8. Which control measure can we use to decrease the severity of disease, such as cholera (which is transmitted from person to person or throughout infected water), using what we know of evolution?

We could keep altering the antibiotics so that humans don't become resistant to the medicine

9. What method can we use to slow down the resistance of a pest insect to our latest pesticide using what we know of evolution and agricultural practices?

Use a completely different one, or mix them.

10. How can we slow down the evolution of a disease in becoming resistant to current treatments?

By using different antibiotics.