
PERIODIC 24.17. In the r vs. K-selection classification, which of the following best describes an selected...
Which of the following accurately describes natural selection? A) Natural selection acts on pre-existing variation in a population. B) Natural selection occurs when individuals shift to a different phenotype better suited to their novel environment. C) Populations become better adapted to novel environments as individuals with beneficial phenotypes reproduce more than others without that phenotype. D) Two of the above are correct. E) All of the above are correct.
D 21. Which of the following is an example of sexual selection? In clownfish, the largest individual in a group becomes female because females can lay more eggs if they are large whereas it takes fewer resources to make sperm In aphids, most individuals reproduce asexually during the summer, but switch to sexual reproduction during the fall In chimps, the babies learn how to crack nuts by watching their mothers perform this task In bowerbirds, males that produce the most...
Which of the following statements does not play a direct role in natural selection? Read all choices before answering the question. a) Artificial selection. b) Individuals within the population, who have the greatest reproductive fitness, are those who produce the greatest number of offspring, who survive to reproduce the subsequent F2 ("grandkids") generation. c) A species will produce more offspring than environmental resources can support. Consequently, not all individuals survive and there is a competition for limited resources. d) Competition...
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4.) Darwin's Theory of Natural Selection stated that: a.) At one time the earth held all the species and each catastrophic event would destroy certain species - survivors would repopulate the world b.) Environmental pressures and internal needs bring about changes in body form and function and this is passed on to their offspring c.) Process in which individuals with favorable inherited traits are more likely to survive and reproduce at a higher rate than other individuals 5.) Convergent...
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7. Which of the following is not a term used to describe animal dispersion? a) Long distance b) Uniform c) Random d) Clumped 8. Population growth may be affected by a) predation but not competition. b) competition but not predation. c) competition and predation. d) neither competition nor predation 9. Batesian mimicry is when a) a harmless species imitates a harmful species b) two or more unpalatable species mimic cach other. c) a harmful species imitates...
Which of the following sentences best corresponds to microevolution? New species form due to climate change. . Species going extinct because of climate change. Birds fed high protein diets produce more eggs. Proportion of heat-resistant alleles increasing in marine organisms due to climate change. D. Question 2 1 pt Given a population that contains genetic variation, what is the correct sequence of the following events under the influence of natural selection? 1. Well-adapted individuals leave more offspring than do poorly...
Sea lions can live into their thirties and produce no more than one pup per year. A sea lion is a(an) __ species. type II opportunistic K-selected r-selected type III 2.5 points QUESTION 2 Which of the following factors is NOT a density-independent factor? earthquakes snowstorms competition hurricanes tsunamis 2.5 points QUESTION 3 In which type of population distribution would plot sampling be most accurate? clumping uniform random random and clumping uniform and clumping 2.5 points QUESTION...
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From the pages 571-587 attached below.
1a) Suppose a population of guppies was infected with a
parasite. In that population a mutation results in a parasite
resistant genotype that spreads through the population through
natural selection. A subsequent mutation in the parasite results in
a genotype that is unaffected by the newly evolved resistant guppy
genotype. What is the name of the hypothesis that explains this
host parasite “arms race”.?
1b) What is this name...