The population at right is being subjected to _____
1.directional selection
2.stabilizing selection
3.disruptive selection
4.selection against intermediate forms
3
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You are surveying biodiversity on a new island chain. You have counted the number of bat species on one island already. The next island is smaller and farther from the mainland than the one you have just surveyed
According to the theory of island biogeography, the total number of its bat species should be ____ than on the current island because the rate of immigration to the new island should be ____ and the rate of extinction should be ____ . Refer to Figure 46.17 in your text for help. Fill in the blank with the appropriate word.
Which of the following foods has the greatest amount of available water?
A. cake B. steak C. jam D. syrup
What is the expected proportion of offspring with sickle-cell anemia if both partners are heterozygous for the sickle-cell anemia gene?
What will be an ideal response?
You wish to design a drug that acts against a recently identified retrovirus. Based upon what you know about retroviruses, which of the following would be the best target for specifically interrupting the viral life cycle in eukaryotic cells?
A) primase B) 30S ribosomal subunits C) reverse transcriptase D) RNA polymerase E) DNA polymerase