Which of the following accurately describes natural selection? Natural selection acts on pre-existing variation in a population. Natural selection occurs when individuals shift to a different phenotype better suited to their novel environment. O Populations become better adapted to novel environments as individuals with beneficial phenotypes reproduce more than others without that phenotype. O Two of the above are correct. O All of the above are correct.

Which of the following accurately describes natural selection? Natural selection acts on pre-existing variation in a population. Natural selection occurs when individuals shift to a different phenotype better suited to their novel environment. O Populations become better adapted to novel environments as individuals with beneficial phenotypes reproduce more than others without that phenotype. O Two of the above are correct. O All of the above are correct.

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 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.
Four of the five factors below support the mechanism of natural selection. In contrast, the fifth factor blocks natural selection from occurring. Which one of the factors listed below does NOT lead to natural selection, but instead stops it from occurring? O Characteristics are inherited - passed from parent to offspring. O Organisms in a population are identical to each other. O There is competition among organisms in a population. O More offspring are born than can survive. O Organisms in a population vary in characteristics that affect how well they survive and reproduce. o o oO
Which of the following statements about natural selection is not true? O Natural selection operates according to differential reproductive success of individuals. O Natural selection usually predominates in small population only. O The cumulative effects of natural selection gives rise to individuals that can survive in a specific environment. O Natural selection results in evolution when individuals with higher survival and reproductive rates pass on these traits to their offspring.
Which of the following is NOT one of the three features of evolution by natural selection? Offspring tend to resemble their parents because of heredity. O Individuals in populations show variation in their phenotypes. Organisms can induce the phenotypic changes they need to survive and reproduce in a given environment. O Some individuals survive and reproduce better than others, because of their phenotypes.
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.
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
The process of natural selection can be described as Group of answer choices 1. an organism changing during its life to be better suited for its environment 2. a cell dividing 3. traits that cause individuals to live longer or reproduce more are seen more often in the next generation 4. none of the above
Which of the following statements is false? ONatural selection can alter a population's mean trait value O Natural selection usually decreases or maintains genetic variation Natural selection always favours rare genotypes O Natural selection acts on the phenotype
Which of the following statements is NOT an observation or inference on which natural selection is based? Group of answer choices Only a fraction of an individual’s offspring may survive. Species produce more offspring than the environment can support. There is heritable variation among individuals. Modifications of an organism acquires during its lifetime can be passed to its offspring.
Natural Selection is an evolutionary force that acts at phenotypic and genetic level. At the genetic level, which of the following statements is correct about the action of this force: O Selection is random and doesn't need genetic diversity in the population O Selection decreases the genetic diversity in the population O Selection is always negative and makes traits undesirable O Selection creates new alleles in the population
A small population of deer (male and female) of reproductive age are introduced to an island. All the males have 11-13 points on their antlers. After several generations, most of the male offspring have 20pts on their antlers. What is this an example of? natural selection with a directional mode natural selection stabilizing selection natural selection with a stabilizing modė O directional selection sexual selection with a disruptional mode
Which of the following is NOT required in order for natural selection to occur in a population? O All of these are required for natural selection to occur O There is variation in phenotypes of individuals in the population O Individuals with some phenotypes produce more offspring than individuals with other phenotypes O Individuals in the population compete with one another for mates O Offspring inherit traits from their parents