It is now easier than ever for humans to travel to and live in other parts of the world. Because of this, populations from different parts of the world that were once isolated from each other are now much more likely to interact and breed. This leads to increased ____
a. frequency dependent selection
b. stabilizing selection
c. genetic drift
d. gene flow
e. founder effects
d
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Which of the following is NOT true of horizontal gene transfer?
A. It occurs when genes are transferred from parent to progeny. B. It increases genetic diversity for a species. C. It has important implications for inferring phylogeny. D. It can occur through endosymbiosis. E. It occurs commonly in bacteria.
On what foodstuff does the main enzyme in the
mouth act?
a. proteins b. fats c. carbohydrates d. fats and carbohydrates e. carbohydrates and proteins
Refer to Figure 40-4. In which part of the cell are calcium ions stored?
a. 2 b. 3 c. 4 d. 5 e. 6 What will be an ideal response?
What are bacterial capsules usually composed of?
A) Repeating phospholipids B) Repeating amino acids and/or salts C) Repeating polysaccharide molecules and/or proteins D) Repeating monosaccharide molecules and/or hydrophilic molecules