27 27. Which of the graphs above shows that one extreme phenotype is favored, possessing a higher fitness?A. 1 (left)B. 2 (middle)C. 3 (right)28. The 14 species of finches that Darwin found on the Galápagos Islands displayed different structuralI amn 5 of 7Use the graphs below to answer questions 25-27.12SlatPeophil arxamAPICE SECTACrional25 Yabich of thTPepelyanDEIND+70%s3PORVATIONTHE WEUngrepazuation

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Description: 27 27. Which of the graphs above shows that one extreme phenotype is favored, possessing a higher fitness?A. 1 (left)B. 2 (middle)C. 3 (right)28. The 14 species of finches that Darwin found on the Galápagos Islands displayed different structuralI amn

Natural selection is a theory that states that organisms evolved by changing their heritable traits…

Answered: 27. Which of the graphs above shows…

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27. Which of the graphs above shows that one extreme phenotype is favored, possessing a higher fitness? A. 1 (left) 2 (middle) B. C. 3 (right)

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter17: Processes Of Evolution

Section: Chapter Questions

Problem 3SQ

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1) Darwin's studies of Galapagos finches are well known in the study of evolution. These studies have been instrumental in helping us understand how new species evolved from pre-existing species. Which statement is true about the speciation of the Galapagos finches? A) The finches evolved traits to help them survive in different environments. B) The finches had different traits that influenced the environment in which they chose to live. C) Genetic variation occurred amongst the finches, giving some a genetic advantage in a changing environment, allowing them to better survive. D) Members of the original population evolved in such a way that it became impossible for individuals from the two new populations to interbreed.
An Eastern European immigrant carrying the allele for Tay-Sachs disease settled in a small village on the St. Lawrence River. Many generations later, the frequency of the allele in that village is statistically higher than it is in the immigrants homeland. The high frequency of the allele in the village probably provides an example of: a. natural selection. b. the concept of relative fitness. c. the HardyWeinberg genetic equilibrium. d. phenotypic variation. e. the founder effect.
The phenomenon in which chance events cause unpredictable changes in allele frequencies is called: a. gene flow. b. genetic drift. c. inbreeding. d. balanced polymorphism. e. stabilizing selection.
Which of the following is not a component of Darwins theory as he understood it? a. Some individuals in a population survive longer than others. b. Some individuals in a population reproduce more thanothers. c. Heritable variations allow some individuals to compete moresuccessfully for resources. d. Mutations in genes produce new variations in a population. e. Some new variations are passed to the next generation.
INTERPRET DATA In a population at genetic equilibrium, the frequency of the dominant phenotype is 0.96. What are the frequencies of the dominant (A) and recessive (a) alleles, and what are the expected frequencies of the AA, Aa, and aa genotypes?
6) If a sudden frost kills many small birds in a population, but only a few medium- and large-sized ones, which type of selection is likely operating? a.Intersexual b.Directional c.Disruptive d.Stabilizing
25. According to Darwin’s theory of natural selection, the individuals that tend to survive are those that have * a. characteristics their parents acquired by use and disuse. b. characteristics that plant and animal breeders value. c. the greatest number of offspring. d. variations best suited to environmental conditions
1. ____ occurs when allele frequencies change over generation due to random chance. a. extinction b. gene flow c. natural selection d. mutation
1. Animals that possess homologous characteristics Group of answer choices a. by chance had the same mutations in the past b. share a common ancestor that also had the characteristic c. are less related than if the characteristics were homoplastic d. evolved the characteristics independently e. are not related 2. In a population of Scrub Jays, the frequency of a recessive allele that results in short tail feathers in homozygous individuals is 0.5. When you survey the population for tail phenotypes, you find that 70 percent of adult scrub jays have short tail feathers. What is most likely true based on these numbers? Group of answer choices a.Short tail feathers appear to be neither helpful nor harmful in this population b.The population is Hardy-Weinberg equilibrium for this trait c. The short tail feathers are likely maladaptive and are allowing predators to capture the scrub-jays d. Having short tail feathers in this population is in…
2. You have sampled a population in which you know that the percentage of the homozygous recessive genotype (a) is 26%. Using that 26%, calculate the following: A. The frequency of the "aa" genotype. B. The frequency of the "a" allele. C. The frequency of the "A" allele. D. The frequencies of the genotypes "AA" and "Aa." E. The frequencies of the two possible phenotypes if "A" is completely dominant over "a
1.A small group of turtles float on a log to an island and establish a new population there. How do you expect the genetic diversity of the island turtles to compare to genetic diversity of the mainland turtle population they originated from? Group of answer choices A. Genetic diversity should be similar, since they are the same species. B. Genetic diversity should be higher for the island turtles, because the new environment will produce new alleles. C. Genetic diversity should be lower for the island turtles, since the island turtles represent a small sample of the genetic diversity from the mainland turtles. 2.If the probability of a turtle having a brown shell is 3/4 and the probability of a turtle having a bumpy shell is 1/4, what is the probability of a turtle that has a shell that is both brown andbumpy? Group of answer choices A. 3/16 B. 3/8 C. 3/4 D. 1/2 3. A Drosophila gene is on the X chromosome, and recessive mutations in this gene cause white eye color…
5. a. Is genetic drift a gain or loss in heterozygosity? b. What population is most effected by drift? Ne = 20 or Ne = 200. Why? c. There is a balancing act between drift and another force of evolution. What is it and why is this important?