What process is at work when two species evolve in unique directions from a common point?
What will be an ideal response?
divergent evolution
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The stable presence of two or more phenotypes in a population is called a ____
a. balanced polymorphism b. mixed gene pool c. mutation pressure d. population bottleneck e. competitive advantage
____ are projections on epithelial tissue that increase the surface area
a. Cilia b. Microvilli c. Flagella d. Pseudopodia e. Exocrines
Grand Rapids variety of lettuce produces seeds that will not germinate unless they are exposed to light
Phytochrome is also involved in that exposure to red light stimulates germination and far-red light inhibits germination. However, the effect of red light can be reversed by an immediate exposure to farred light--and vice versa. You design an experiment in which you expose seeds of Grand Rapids lettuce first to red light, then immediately to far-red light, and then immediately to red light again. Would these seeds germinate? Use your knowledge of the phytochrome molecule to explain your reasoning. What if the seeds were exposed first to red light, then immediately to far-red light, then immediately to red light again, and then immediately to far-red light again What will be an ideal response?
What type of immunity occurs from getting a vaccination?
a. innate immunity b. naturally acquired active immunity c. artificially acquired active immunity d. artificially acquired passive immunity