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Study_questions_week-1_13

A small population of ding bats consists of only 5

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15) A small population of Ding-bats consists of only 5 individuals. Their genotypes at the C-locus are listed below: C 1 C 2 , C 2 C 2 , C 1 C 1 , C 1 C 1 , C 1 C 2 The frequency of the C 1 -allele in the gene pool is : a) 10%; b) 20%; c) 40%; d) 60%; e) none of these choices. 16) Consider the life cycle of the HIV virus. The drug ΑΖΤ influences which step in the life cycle? 17) The HIV virus adapts to AZT by: 18) Compared to other pathogens, the major reason that HIV is not eliminated by the human immune system is:
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19) Chemicals used to control agricultural pests and bacteria can lose much of their effectiveness over time. This loss of effectiveness occurs due to what process by the pests and bacteria: a) gradual evolution of resistance over a period of about 100 years b) a gradual physiological response over a period a few months c) rapid evolution of resistance over a period of a few years or decades d) a rapid physiological response over a period of a few days e) none of these choices. 20) The major factor that leads to a new pandemic of influenza in humans is: Three genotypes (A,B,C) of an annual, asexual fish were released as eggs into a pond during the Spring of 2000 as described in the table below. To simplify your analysis, you can assume that each genotype represents a single gene, as we did in class. The next spring the eggs of the next generation were scored as reported in the table below. Genotype Number eggs released in 2000 Number eggs observed next generation A 50 200 B 400 400 C 50 150
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