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Immediately relevant to game theory are the sex ratios in certain parasitic wasp species that have a large excess of females. In these species, fertilized eggs Line develop into females and unfertilized eggs into males. 5 A female stores sperm and can determine the sex of each egg she lays by fertilizing it or leaving it unfertilized. By Fisher‘s genetic argument that the sex ratio will be favored which maximizes the number of descendants an individual will have and hence the 10 number of gene copies transmitted, it should pay a female to produce equal numbers of sons and daughters. Hamilton, noting that the eggs develop within their host—the larva of another insect—and that the newly emerged adult wasps mate immediately and disperse, 15 offered a remarkably cogent analysis. Since only one female usually lays eggs in a given larva, it would pay her to produce one male only, because this one male could fertilize all his sisters on emergence. Like Fisher, Hamilton looked for an evolutionarily stable strategy, 20 but he went a step further in recognizing that he was looking for a strategy.
1>The author suggests that the work of Fisher and Hamilton was similar in that both scientists (A) conducted their research at approximately the same time (B) sought to manipulate the sex ratios of some of the animals they studied (C) sought an explanation of why certain sex ratios exist and remain stable (D) studied game theory, thereby providing important groundwork for the later development of strategy theory (E) studied reproduction in the same animal species
2>Which of the following is NOT true of the species of parasitic wasps discussed in the passage? (A) Adult female wasps are capable of storing sperm. (B) Female wasps lay their eggs in the larvae of other insects. (C) The adult female wasp can be fertilized by a male that was hatched in the same larva as herself. (D) So few male wasps are produced that extinction is almost certain. (E) Male wasps do not emerge from their hosts until they reach sexual maturity.
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Immediately relevant to game theory are the sex ratios in certain parasitic wasp species that have a large excess of females. In these species, fertilized eggs Line develop into females and unfertilized eggs into males. 5 A female stores sperm and can determine the sex of each egg she lays by fertilizing it or leaving it unfertilized. By Fisher‘s genetic argument that the sex ratio will be favored which maximizes the number of descendants an individual will have and hence the 10 number of gene copies transmitted, it should pay a female to produce equal numbers of sons and daughters. Hamilton, noting that the eggs develop within their host—the larva of another insect—and that the newly emerged adult wasps mate immediately and disperse, 15 offered a remarkably cogent analysis. Since only one female usually lays eggs in a given larva, it would pay her to produce one male only, because this one male could fertilize all his sisters on emergence. Like Fisher, Hamilton looked for an evolutionarily stable strategy, 20 but he went a step further in recognizing that he was looking for a strategy.
1>The author suggests that the work of Fisher and Hamilton was similar in that both scientists (A) conducted their research at approximately the same time (B) sought to manipulate the sex ratios of some of the animals they studied (C) sought an explanation of why certain sex ratios exist and remain stable (D) studied game theory, thereby providing important groundwork for the later development of strategy theory (E) studied reproduction in the same animal species
2>Which of the following is NOT true of the species of parasitic wasps discussed in the passage? (A) Adult female wasps are capable of storing sperm. (B) Female wasps lay their eggs in the larvae of other insects. (C) The adult female wasp can be fertilized by a male that was hatched in the same larva as herself. (D) So few male wasps are produced that extinction is almost certain. (E) Male wasps do not emerge from their hosts until they reach sexual maturity.
Answer for Q1 --> C
Answer for Q2 --> D time took 3:45 mins
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
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04 Oct 2014, 14:27
