The scientific explanation for the diversity seen in
nature is
a. based upon sexual differences.
b. divine creation of the many different forms of
life.
c. found in the science of taxonomy.
d. natural selection.
e. artificial selection.
Answer: d
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Which of the following statements best supports the claim that natural selection has favored genes that underpin a species-specific behavior?
A. An individual avoids certain locations or substances associated with negative experiences. B. A male responds to a female-produced pheromone. C. Humans acquire a specific language. D. Threatening silhouettes provoke defensive, crouching postures in chicks.
Helicobacter pylori appears connected to stomach cancer and ulcers
Indicate whether this statement is TRUE or FALSE.
When two species battle for resources until one is driven locally extinct, the process is called
a) parasitism b) mutualism c) competitive exclusion d) character displacement e) resource partitioning
Which of the following is true regarding cultivation and isolation of animal viruses?
a. Diploid cell culture lines, developed from human embryos, are widely used for culturing viruses that require a human host. b. The preferred and widely used method of viral isolation and growth is via growth in an embryonated egg. c. Mouse models are available for virtually all human viral infections and can be routinely used for vaccine development. d. Viruses can be easily grown in liquid culture without any other organisms present.