Which of the following is an example of a limitation on adaptation through natural selection? In a population of bacteria exposed to an antibiotic, there may be no individual with a resistance gene on which selection can act. Bacteria reproduce very rapidly. Natural selection can only work to improve a species in the longer term and would not allow selection of something that would only have a short-term benefit. O Mutations are very rare. Most animal populations have little genetic variation on which selection can act.

Which of the following is an example of a limitation on adaptation through natural selection? In a population of bacteria exposed to an antibiotic, there may be no individual with a resistance gene on which selection can act. Bacteria reproduce very rapidly. Natural selection can only work to improve a species in the longer term and would not allow selection of something that would only have a short-term benefit. O Mutations are very rare. Most animal populations have little genetic variation on which selection can act.

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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Which of the following best describes natural selection? O It is a guess made by scientists about how life develops, but it has no hard evidence to support it. It is the idea that the strong survive and the weak die off. It is the idea that organisms with genetic traits that improve their ability to reproduce are more likely to pass those traits on to future generations. It is the idea that organisms naturally increase in complexity and intelligence with time.
What result in adaptation comes from natural selection?
Which of the following BEST describes the theory of natural selection? Living organisms change over time. Each species produces many more offspring than can survive long enough to reproduce. The offspring that do survive contain genes that are inherited from the parents. There is variation among the members of a species. Some of this variation is genetically determined and so can be passed on to future generations. Some individuals have genes that increase their chances for survival and reproduction. These individuals are more likely to reproduce and pass on their genes, causing their genes to become more common in the next generation. There is a struggle for existence among the members of a population.
Which of the following is true about natural selection? O It can only act on traits that are heritable and show variation. It always favors large, strong individuals. It allows species to choose what adaptations are passed on to offspring. O It acts on individual organisms, helping them become better adapted to their environment.
When considering synonymous and nonsynonymous mutations within a population, which of the following is TRUE? O Nonsynonymous mutations will more often be removed by purifying selection The two types of mutations are not distinguished by purifying selection O Synonymous mutations will more often be removed by purifying selection Only synonymous mutations are retained by natural selection O Only nonsynonymous mutations are retained over the course of evolution
Evolution by natural selection is founded on what basic idea? Random genetic mutations that help a species survive will be more likely to be passed to future generations. Only traits that will help an individual organism survive will be passed down to future generations. Only the biggest, strongest, fastest, or smartest creatures survive. Traits that animals acquire over their life will be taught to future generations.
Over long periods of time, many cave-dwelling organisms have lost their eyes. Tapeworms have lost their digestive systems. VWhales have lost their hind limbs. How can natural selection account for these losses? The ancestors of these organisms experienced harmful mutations that forced them to lose these structures. Natural selection accounts for these losses by the principle of use and disuse. OIf the function of these structures has diminished over long periods of time, each of these structures presented greater costs than benefits. O Natural selection cannot account for losses, but accounts only for new structures and functions.
Point mutations, like the single-nucleotide substitution in human sickle-cell trait, illustrate which of the following evolutionary features? mutations are never detrimental and always advantageous, regardless of the environment mutations might be either advantageous or detrimental, depending on the environment mutations are always detrimental and never advantageous, regardless of the environment mutations are neither advantageous nor detrimental, regardless of the environment mutations are always both advantageous and detrimental, regardless of the environment
Background: In class we did a project about m and m’s and there ability to evolve and natural selection. (Yes I know they can’t actually evolve it was just used as a example in class) however I can’t figure out this question. Occasionally a mutant may occur and produce a candy that is misshapen or Pointier or flatter than the rest. Often this proves to be a weakness, but a rare mutation may confer extra M&M durability. Other mutations in M&Ms could occur ( like ones that result in a new color). A mutant un you population represents a new _________. What goes in the blank
How might an evolutionary biologist explain why a species of salamander becomes blind after colonizing a cave? Group of answer choices Members of the ancestral population that colonized the cave differed in their ability to see. If maintaining the ability to see in the cave was a waste of energy, blind salamanders might actually have more offspring than those who could see. It is possible that in the cave there is a source of pollution that increases the mutation rate for a gene that makes salamanders blind. Over time, due to exposure to this chemical, the membersof the population lose their sight. There is no way to explain this in terms of natural selection. The members of this salamander species no longer needed to use their eyes. Over time, due to lack of use, they lost the ability to see.
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
Which of the following is not true of natural selection? (a) natural selection acts to preserve favorable traits and eliminate unfavorable traits (b) the offspring of individuals that are better adapted to the environment will make up a larger proportion of the next generation (c) natural selection directs the course of evolution by preserving the traits acquired during an individuals lifetime (d) natural selection acts on a populations genetic variability, which arises through mutation (e) natural selection may result in changes in allele frequencies in a population