According to the figure above, a species has the highest chance of extinction when _____
A) the island is large and close to the mainland
B) the island is small and close to the mainland
C) the island is large and remote
D) the island is small and remote
Answer: D
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Color is an inherited trait in beetles. If brown beetles move into a population from a nearby island, which of the following statements is correct?
A. Gene flow causes the frequency of the green allele to increase. B. Gene flow causes the frequency of the brown allele to increase. C. Natural selection causes the frequency of the green allele to increase. D. Natural selection causes the frequency of the brown allele to increase. E. This is an example of genetic drift.
What is pharming?
A) the use of genetically modified crops with organic pesticides B) the use of genetically modified organisms to produce medical treatments C) the use of gene guns to produce genetically modified fish species D) the use of genetically modified organisms that are photosynthetic
A promising new type of cancer treatment, immunotherapy, may involve all but one of these treatments Choose the EXCEPTION
A. creating proteins that kill cancer cells and giving them to the cancer patient B. increasing the effectiveness of the body's own immune response to cancer cells C. injecting molecules harvested from other cured cancer patients into the patient with cancer
Identify the purine from the list below:
A) cytosine B) thymine C) uracil D) guanine