Suppose five boats are adrift at sea, each one containing a number of your relatives, and you have the power to save one boat from a dire fate. According to kin selection theory, it would be in the best interest of your genome to save a boat that contains: (hint: sum of the r values and pick the answer with the highest)
A. two of your brothers.
B. both of your parents.
C. one sister, one half-brother, and three cousins.
D. seven of your cousins.
E. four half-siblings.
Answer: C. one sister, one half-brother, and three cousins.
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If gene replacement therapy became available
a. it would not work for humans because we have too many chromosomes. b. it would involve a surgical technique that separates chromosomes that have failed to segregate properly during meiosis II. c. it could be used to treat victims of a recessive disease by removing the dominant damaging autosomal allele and replacing it with a harmless one. d. it would replace defective alleles with normal ones. e. it would remove entire chromosomes from cells and repair the defective genes.
The temperature of a city is often warmer than the temperature in its surrounding suburbs. This is the result of an urban heat island effect. Why might this effect occur?
A) The pavement and buildings absorb heat. B) There are more parks in the city. C) Fewer people drive in the suburbs. D) Fewer buildings use air conditioning in the suburbs.
Which of the following processes requires oxygen?
A) The Krebs cycle B) Glycolysis C) The ETC D) Fermentation
Resistance of Pseudomonas to a wide range of antibacterial agents is partly due to its
A) production of exoenzyme S. B) use of the Entner-Doudoroff pathway as its major means of catabolizing glucose. C) ability to utilize a wide range of organic and nitrogen sources. D) ability to metabolize many drugs. E) lack of special requirements for growth.