Which of the following statements is true?
a. Gene mutations occur independently of
each other.
b. Gene mutations are relatively rare.
c. Ionizing radiation causes chromosomal
damage and free radical formation.
d. Mutations are random; that is, it is
impossible to predict exactly when a
specific gene will mutate, but an expected
frequency can be assigned.
e. All of these are true
E
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There is evidence that increased levels of CO2 in the atmosphere may increase Earth's surface temperature. How might this affect the spread of mosquitoes and malaria? Select all that apply
A. Warmer temperatures may increase the habitat range of mosquitoes. B. Warmer temperatures may result in malaria cases in new regions. C. Warmer temperatures will have no affect on mosquitoes or the incidence of malaria. D. Warmer temperatures will kill off mosquitoes, thereby decreasing malaria cases.
In a population of rabbits, some evolve the
ability to outrun foxes. This is an example of ____ selection.
a. directional b. stabilizing c. disruptive d. mutational e. restricted
Which of the following statements about an ecosystem receiving a moderate level of continued disturbance are true? (Check all that apply.)A) A moderate level of continued disturbance predicts that most communities eventually reach an end-state or climax community.B) A moderate level of continued disturbance should lead to increases in species richness.C) A moderate level of continued disturbance tends to lead to the dominance of K-selected species.D) An example of a moderate level of continued disturbance would be a tree fall in a mature rain forest.E) A moderate level of continued disturbance should lead to all successional stages being present in the community at the same time.
What will be an ideal response?
Inhalation is another word for inspiration.
Answer the following statement true (T) or false (F)