As an experiment, Dr. Charles Someone released bunnies on an island where there were no natural predators and plenty of food and good bunny habitat. Before he released them, he noticed that the population had an equal number of bunnies with great heat resistance and bunnies without good heat resistance. Since the island was very hot, he suspected that evolution would occur to make the heat resistant allele more abundant than the heat susceptible allele. He comes back after many years and observes the bunnies, only to find that the heat resistant bunnies are not the majority. In fact, the alleles for the susceptibility vastly outnumber the ones for resistance. What is going on? Choose the best answer. O a. Random chance, and not evolution. Evolution only happens with beneficial alleles O b. Random chance, and evolution. Evolution can happen with beneficial or deleterious alleles O c. Natural selection must be choosing the susceptible bunnies for a reason O d. None of these

As an experiment, Dr. Charles Someone released bunnies on an island where there were no natural predators and plenty of food and good bunny habitat. Before he released them, he noticed that the population had an equal number of bunnies with great heat resistance and bunnies without good heat resistance. Since the island was very hot, he suspected that evolution would occur to make the heat resistant allele more abundant than the heat susceptible allele. He comes back after many years and observes the bunnies, only to find that the heat resistant bunnies are not the majority. In fact, the alleles for the susceptibility vastly outnumber the ones for resistance. What is going on? Choose the best answer. O a. Random chance, and not evolution. Evolution only happens with beneficial alleles O b. Random chance, and evolution. Evolution can happen with beneficial or deleterious alleles O c. Natural selection must be choosing the susceptible bunnies for a reason O d. None of these

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter19: Evolutionary Change In Populations

Section: Chapter Questions

Problem 10TYU: Which of the following is not true of natural selection? (a) natural selection acts to preserve...

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The study featured in "This is a Truly Lousy Experiment" relied on well-established conclusions from the classic research of Charles Darwin. From the article, Darwin's research on evolution by natural selection was based on the rationale: If artificial selection by breeders could generate diversity in only a few generations of pigeons, then it would not be surprising that nature would be capable of generating the vast diversity of organisms found on earth. O If natural selection by breeders could generate diversity in only a few generations of pigeons, then it would not be surprising that artificial selection over a very long time, would be capable of generating the vast diversity found on earth. If artificial selection by nature could generate diversity in only a few generations of pigeons, then it would not be surprising that breeders, over a very long time, would be capable of generating the vast diversity found on earth. Charles Darwin did not study diversity and evolution. If…
Vhy was natural selection controversial to biologists in Darwin's time? It was a cruel and unfair principle as to why species change. B) It went against the religious beliefs of the time. There was no evidence that descent with modification during Darwin's time. He had no explanation for how advantageous traits were passed from parent to offspring.
Most new mutations are detrimental, yet rare beneficial mutations canbe adaptive. With regard to the fate of new mutations, discuss whetheryou think it is more important for natural selection to select againstdetrimental alleles or to select in favor of beneficial ones. Which doyou think is more significant in human populations?
In a population of lizards, color is genetically determined. The current population has two two phenotypes: blue and yellow. Which of the following scenarios could result in evolution by migration? O A disease indiscriminately reduces the population by 90%. Birds are better able to see and therefor prey on blue lizards The population is joined by individuals from a nearby population that has an allele for a red phenotype. Females preferentially mate with individuals exhibiting the blue phenotype.
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In a particular population of mice, certain individualsdisplay a phenotype called short tail, which is inherited as a dominant trait. Some individuals display arecessive trait called dilute, which affects coat color.Which of these traits would be easier to eliminatefrom the population by selective breeding? Why?
In the year 2374, humans finally developed the technology necessary for time travel. You are a scientist interested in the population genetics of extinct animals. Taking advantage of this technology advance, you decide to travel back 8 million years to conduct field work in Venezuela. You are studying a population of Phoberomys pattersoni, the world’s largest extinct rodent weighing approximately 700 kg (1500 lbs) and looking vaguely like a giant guinea pig. The coat color of this rodent varies between tan (dominant) and brown (recessive). Assume the population is in Hardy-Weinberg equilibrium. You observed 336 tan Phoberomys and 64 brown Phoberomys during your study. What is the frequency of the homozygous recessive genotype? ________________ What is the allelic frequency of the dominant (tan) allele in the population? ___________ Of the animals you observed, how many were heterozygous? _______________ As you observe the animals you count 200 brown and 450 tan. Conduct a…
If vestigial traits are no longer useful to an organism, why don't they evolve out of the population? * Individuals with the trait have developed new ways to use them. Individuals that have the trait continue to survive and reproduce, and they pass on th genes for that trait to the next generation. Individuals that have the trait must have some sort of evolutionary advantage. The individuals that have the trait become less common over time. Sign out US %23 24 96 &. back 2 3. 4. 8. e tab b n m shift ctri ctri alt
I had trouble with explaining how natural selection affects alllele and genotype frequency. Does natural natural selection affect alleles by causing adaption to happen increasing the frequency of advantageous alleles?
Fred and George are arguing over evolution. Fred posits that evolution can occur in any population as long as all members gradually undergo change. George disagrees; he thinks that individual memebers of the population do not change but instead have offspring with the trait(s) of interest and thus a population evolves over generations. Who is right? Choose the best answe a. Fred is right! As members of the population respond to the environment, they change to suit it better O b. Fred is right! All memebers of the population must change aroudn the same time O c. George is right Evolution occurs over generations as only the beneficial traits are passed onto the next generation. O d. George is right! Individuals don't change their alleles, but the offspring they have contributes to the change in population allele frequencies
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