The specific process by which a caterpillar becomes a butterfly is called
A. epigenesis.
B. cellular differentiation.
C. gastrulation.
D. involution.
E. metamorphosis.
E. metamorphosis.
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Which of the following situations in not an example of directional selection? a. Peppered moths in England
b. All of these are examples of directional selection. c. Rock pocket mice in Arizona. d. Antibiotic resistance in bacteria. e. None of these are examples of directional selection.
If the frequency of expression of a recessive
trait in a population is 16 percent, the frequency of the recessive allele is what percent? a. 16 b. 25 c. 40 d. 50 e. 67
What are the chances that a woman who is color blind will have a son who is color blind?
A. 0 percent D. 75 percent B. 25 percent E. 100 percent C. 50 percent
Some possible outcome(s) following exposure to microorganisms may include:
A. The microorganisms become part of resident flora B. The microorganisms are eliminated by host defenses C. The microorganisms cause no apparent symptoms, but may shed D. The microorganisms cause apparent symptoms in infectious disease E. All of the above