In a population of lizards, half of the individuals are yellow and half are blue. Color is genetically determined. Which of the following scenarios could result in evolution by genetic drift? O A disease indiscriminately reduces the population by 90%. Females preferentially mate with blue individuals. Yellow individuals from a nearby population join the population. Birds are better able to see and therefor prey on blue lizards.

In a population of lizards, half of the individuals are yellow and half are blue. Color is genetically determined. Which of the following scenarios could result in evolution by genetic drift? O A disease indiscriminately reduces the population by 90%. Females preferentially mate with blue individuals. Yellow individuals from a nearby population join the population. Birds are better able to see and therefor prey on blue lizards.

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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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.
Which of the following statements about the forces that drive evolution is TRUE? Unlike the other evolutionary forces, natural selection is the only force that improves the match between the organism and its environment. Unlike the other evolutionary forces, gene flow is the only force that causes populations to become more different. Unlike the other evolutionary forces, mutation is the only force that decreases genetic variability. Unlike the other evolutionary forces, nonrandom mating is the only force that changes allele frequency.
Consider the following example. In Alaska, different individuals of foxes can be brown, white, grey or black. In 2018, the population was 25% brown fur, 25% white fur, 25% grey fur and 25% black fur. The polar vortex in 2019 killed many of the foxes. When scientists measured the frequencies of foxes in 2023, they found that 50% were brown, 25% were white and 25% were black. Which force of evolution has occurred? A. Founder Effect B. Gene Flow C. Population Bottleneck D. Mutation
In the modern reckoning of evolution by natural selection, what is the most important feature that allows an allele to be more represented over time in a population? The allele makes the organisim stronger. The allele allows the organisim to produce more breeding offspring. The allele allows the organisim to eat more readily. The allele allows the organsims to escape predators readily.
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
In a population of rabbits, half of the rabbits are brown and half are grey. Because male and female rabbits prefer to mate with only brown rabbits, eventually the population ends up with about 90% of the rabbits being brown. We can say that: grey rabbits will go extinct soon. no evolution has occurred because the change in allele frequencies is due to mating preference. evolution by non-random mating (or sexual selection) has occurred. evolution by natural selection has occurred.
A population of 2000 mice on an island includes 40% white-furred individuals, 50% brown-furred individuals, and 10% black-furred individuals. A storm hits the island and decimates the population, leaving about 100 individuals, of which 75 are brown and 25 are white. The fur color of this population remains stable at about 75% brown and 25% white over the next several generations. -‐has evolution occurred? If so, by what process(es)? -‐has natural selection occurred? Why or why not? ‐Is the current population in Hardy-Weinberg equilibrium? yes no can't tell. Explain your answer.
Alfred Russel Wallace and Charles Darwin accepted all of the following claims about evolution by means of natural selection, with the exception of: over time, the species will evolve as the more fit individuals replace the less fit individuals species can produce more offspring than the environment can sustain those individuals that are more fit will survive and reproduce in the greatest numbers variation is present among individuals of all species E. all individuals within a species have equal chances to improve their fitness
What causes variation among a population of living things and How can variation in one generation influence the next generation? Is the variation in a population will be examined as the “raw material” upon which natural selection acts. Why are there so many different kinds of living things? Comparing species that exist today reveals a lot about their relationships to one another and provides evidence of common origins. This session explores the theory of evolution: change in species over time.
With respect to this form of natural selection, explain the meaning of the word directional.
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