Which of the following is the subdiscipline of biology concerned with the study of heredity and variation at the molecular, cellular, developmental, organismal, and populational levels?
A) cytogenetics
B) molecular biology
C) biochemistry
D) cell biology
E) genetics
Answer: E
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Because most natural populations are actually metapopulations, we can only understand their dynamics if, in addition to the births and deaths of individuals, we also understand:
A. the extinction of local populations. B. the colonization of local populations. C. r and K selection. D. the extinction and colonization of local populations. E. the extinction and colonization of local populations as well as r and K selection.
The difference between benign and malignant tumors is that
A) benign tumors have not lost growth control. B) benign tumors do not stimulate angiogenesis. C) benign tumors have not spread to other sites. D) malignant tumors are adherent. E) benign tumors are cancers, while malignant tumors are not.
The realized niche of Semibalanus is
A. bigger than its fundamental niche. B. the same as its fundamental niche. C. the same as that of Chthamalus. D. smaller than its fundamental niche.
An unscrupulous dog breeder has been selecting for dogs that have very large litters, with the goal of maximizing profits. Why might this strategy be counterproductive?
A. It will cost too much money to feed all those puppies. B. Litter size is not influenced by genetics. C. The puppies from large litters are likely to be malnourished, and the mother will have few resources to devote to future litters. D. Intrauterine cannibalism will reduce the number of puppies. Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about the risks versus benefits of producing a large little of puppies? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?