Which type of selection results in greater genetic variance in a population? a. stabilizing selection b. directional selection c. diversifying selection d. positive frequency-dependent selection
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Which type of selection results in greater genetic
variance in a population?
a. stabilizing selection
b. directional selection
c. diversifying selection
d. positive frequency-dependent selection
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- Some females seem to prefer the green colouration and some females seem to prefer the blue colouration. What type of selection is this an example of? a. stabilizing b. balancing c. directional d. diversifyingAssume you are studying a population of hummingbirds. You discover that the smallest hummingbirds can't keep their eggs warm and those eggs tend to fail. You also discover the largest hummingbirds tend to accidentally crush their eggs, so those eggs fail. The medium-size hummingbirds therefore have the highest fitness. What type of selection would this result in? a. Directional selection b. Sexual selection c. Disruptive selection d. Stabilizing selectionWhich one of the four forces of evolution has the smallest effect on changing allele frequencies? a. Drift b. Gene flow c. Mutation d. Selection
- D. II and IV PDF Final Exam JPG Converted.pdf Sign in 28. The sperm count of the human population of developed societies has million per ml to 50 million per ml in recent years. This is an example of A. directional selection B. disruptive selection C. sexual selection D. stabilising selection 29. Which of the followings is TRUE about directional selection? A. Selection pressure against organisms with one of the extreme phenotypes. B. It usually occurs in response to a stable environment. C. The mean value of the population graph remains unchanged. D. Example for direction selection is the birth weights of human babies. Page 10 of 23 Cell Biology BIO30305 Dr. Ng Woei Kean 202104 FE 30. Which type of selection causes the dark-coloured moth has a natural selective advantage over the light-coloured moth during industrial melanism in the 19th century? A. Stabilising selection B. Directional selection C. Sexual selection D. Disruptive selection Page 11 / 23Alleles that increase resistance to disease are expected to increase in frequency in the population as a result of? a. positive selection b. negative selection c. balancing selection d. artificial selectionWhich of the four evolutionary mechanisms make a population better adapted to its environment? A. Migration B. Genetic drift C. Mutations D. Natural selection. 
- What is the difference between artificial selection (e.g., greyhounds that are bred for speed) and natural selection? a. In artificial selection, the genetic variation introduced into the population is limited, but in natural selection, it is not b. In artificial selection, the environment is the selective force, while in natural selection, humans are the selective force c. In natural selection, the environment is the selective force, while in artificial selection, humans are the selective force d. Unlike other species, dogs are not subject to natural selection e. Both A & CWhich statement best summarizes why genetic drift tends to impact small populations more than large populations? A. Small populations have a heterozygote advantage because heterozygotes are more common than homozygotes. B. Small populations have a smaller gene pool, so random changes influence them more. C. Small populations have a relatively large gene pool, so the founder effect stabilizes their alleles.D. Small populations tend to experience directional selection, making one phenotype more common.Match each term with the best description. 1. natural selection 2. domesticated 3. intentional breeding 4. artificial selection a. when the environment is the controlling agent b. when humans purposefully select a male and female for mating or breeding c. tamed or made appropriate for use by humans d. when humans act as the controlling agent
- A. Stabilizing Selection B. Disruptive Selection C. Directional Selection D. Normal Selection 26. A biologist studying wolves has collected data on the mass of meat caught per day from hunts by packs varying in size from 2 to 15 wolves. The data show that as pack size increases, the mass of meat available per pack member per day increases. Which additional study would provide evidence that pack hunting provides an advantage? A. Measure and compare the abili ty of wolves of varying ages to successfully engage in hunting. B. Observe whether an individual wolf hunts different types of prey than a pack of wolves hunts. C. Measure the ratio of male to female wolves engaging in hunting to see if it varies with pack size. D. Compare the average number of pups per litter that reach reproductive age for wolf packs of different sizes. luminate Education TM Inc.What is the greatest source of genetic variation in plant and animal populations? a. Geographic variation b. Recessive masking in heterozygotes c. Selection d. Sexual reproductionIs it better for an organism to maximize their direct fitness or their indirect fitness? a. Direct Fitness b. Indirect Fitness c. Trick question. Neither Direct or Indirect Fitness matter in evolution.