According to William Hamilton theory of inclusive fitness, rB > C. This means A.

Question

According to William Hamilton theory of inclusive fitness, rB > C. This means A. natural selection does not favor altruistic behavior that causes the death of the altruist B. natural selection favors altruistic acts when the resulting benefit to the recipient, corrected for relatedness, exceeds the cost to the altruist. C. natural selection is more likely to favor altruistic behavior that benefits an offspring than altruistic behavior that benefits a sibling. D. the effects of kin selection are larger than the effects of direct natural selection. What is the defining feature of exponential growth? A. It lasts indefinitely. B. The growth rate is constant. C. The growth rate increases rapidly over time D. The growth rate is very high. What four factors define population growth? A. Age-specific birth rates, age-specific death rates, age structure, and metapopulation structure. B. Survivorship, age-specific mortality, fecundity, death rate. C. Mark-recapture, census, quadrat sampling, transects D. Births, deaths, immigration, emigration. In what populations does exponential growth tend to occur? A. In populations that colonize new habitats. B. In populations that experience intense competition C. In populations that experience high rates of predation. D. In metapopulations. If most individuals in a population are young, why is the population likely to grow rapidly in the future? A. Death rates will be low B. The population has a skewed age distribution C. Immigration and emigration can be ignored D. Many individuals will begin to reproduce soon. Why have population biologists become particularly interested in the dynamics of metapopulations? A. Because humans exist as metapopulations. B. Because Whooping Cranes exist as a metapopulation C. Because many populations are becoming restricted to small islands of habitats. D. Because metapopulations explain why populations occupying large, contiguous areas are vulnerable to extinction. Studies of the population cycles of the lynx and the snowshoe hare have revealed that A. predation is the dominant factor affecting prey population cycling. B. hares and lynx are so mutually dependent that each species cannot survive without the other C. both hare and lynx populations are regulated mainly by a biotic factors. D. the hare population is r-selected and the lynx population is K-selected. Analysis of ecological footprints reveals that A. Earth's carrying capacity would increase if per capita mean consumption increased. B. current demand by industrialized countries for resources is much smaller than the ecological footprint of those C. it is not possible for the technological improvements to increase Earth's carrying capacity for humans. D. the ecological footprint of the Canada is high because per capita resource use is high. Based on current growth rates, Earth's human population in 2050 will be closest to a. 2 billion B. 4 billion C. 5 billion D. 7 billion E. 9 billion Population ecologists follow the fate of same-age cohorts to A. determine a population's carrying capacity B. determine the birth and death rate of each group in a population. C. determine if a population is regulated by density-dependent processes. D. determine the factors that regulate the size of a population.

Explanation / Answer

Answer:

60. (B) natural selection favors altruistic acts when the resulting benefit to the recipient, corrected for relatedness, exceeds the cost to the altruist.

Explanation:

Coefficient of relatedness and Hamilton's rule provide a way of measuring the strength of the selective forces favoring altruism against the potential cost of the selfless behavior.

61. (B) the growth rate is constant

Explanation:

Exponential growth is the growth that occurs at a constant rate.

62. (D) births, deaths, immigration, emigration

Explanation:

Births, deaths, immigration, emigration results in the change in the number of individuals in a population and thus has a direct effect on the growth of a population.

63. (A) In populations that colonize new habitats

Explanation:

In new habitats, the avilability of resourses are unlimited which favors exponential growth in the population.

(Since there are multiple questions, the first 4 questions have been answered according to the rules of Chegg)

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