Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 11, Problem 7RQ
In which of the following pairs do both evolutionary processes introduce new
a. natural selection and genetic drift
b. mutation and gene flow
c. natural selection and gene flow
d. gene flow and genetic drift
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In which of the following pairs do both evolutionary processes introduce new genetic variation into a population?a. natural selection and genetic driftb. mutation and gene flowc. natural selection and gene flowd. gene flow and genetic drift
What is the difference between evolution, natural selection, and artificial selection?
A.
Evolution is a genetic change in a population over time which can occur through natural selection.
Artificial selection is the differential reproduction of individuals in a population to promote the characteristics chosen by the breeder.
B.
Natural selection is the change of allele frequencies in a population over time.
Evolution leads to differential survival and reproduction of individuals.
Artificial selection has produced domesticated animals and plants.
C.
Evolution is a mechanism of artificial selection.
Natural selection is a form of artificial selection in which nature selects the characteristics that are most beneficial to a species.
D.
Artificial selection is a mechanism of evolution and is the main process of domesticating animals and plants for human use.
Natural selection is the same as evolution.
Which of the following statements describes an example of genetic drift?a. Allele g for fat production increases in a small population because birds with more bodyfat have higher survivorship in a harsh winter.b. Random mutation increases the frequency of allele A in one population but not inanother.c. Allele R reaches a frequency of 1.0 because individuals with genotype rr are sterile.d. Allele m is lost when a virus kills all but a few individuals and just by chance, none ofthe survivors possess allele m.
Chapter 11 Solutions
Concepts of Biology
Ch. 11 - Figure 11.7 Do you think genetic drift would...Ch. 11 - Which scientific concept did Charles Darwin and...Ch. 11 - Which of the following situations will lead to...Ch. 11 - What is the difference between micro- and...Ch. 11 - Population genetics is the study of ________. a....Ch. 11 - Galapagos medium ground finches are found on Santa...Ch. 11 - In which of the following pairs do both...Ch. 11 - The wing of a bird and the arm of a human are...Ch. 11 - The fact that DNA sequences are more similar in...Ch. 11 - Which situation would most likely lead to...
Ch. 11 - What is the main difference between dispersal and...Ch. 11 - Which variable increases the likelihood of...Ch. 11 - The word “theory” in theory of evolution is best...Ch. 11 - Why are alternative scientific theories to...Ch. 11 - If a person scatters a handful of plant seeds from...Ch. 11 - Explain the Hardy-Weinberg principle of...Ch. 11 - Describe natural selection and give an example of...Ch. 11 - Why do scientists consider vestigial structures...Ch. 11 - Why do island chains provide ideal conditions for...Ch. 11 - Two species of fish had recently undergone...Ch. 11 - How does the scientific meaning of “theory” differ...Ch. 11 - Explain why the statement that a monkey is more...
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- When male lions reach sexual maturity, they leave their group in search of a new pride. This can alter the allele frequencies of the population through which of the following mechanisms? a. natural selection b. genetic drift c. gene flow d. random matingarrow_forwardIndicate whether each of the following statements about natural selection is true (T) or false (F). Put either a T or an F in each box provided. a. Natural selection alters a population's gene pool b. Natural selection creates new alleles which increase the reproductive success of their owners c. Natural selection favors traits which it anticipates will be beneficial to a species in the future d. Natural selection can at times be observed in nature over the course of just a few decades e. Natural selection acts directly on an individual's phenotypearrow_forwardBiology Which of the following is NOT a requirement of natural selection? a. non-random mutations b. variation is heritable c. variation within a population d. non-random survival and reproduction Which person has the greatest fitness? a. 65-year old man with 3 children and 2 grandchildren b. 35-year-old man with 3 children c. 70-year-old woman with 3 children, 10 grandchildren, and 2 great grandchild d. 100-year-old woman with 4 childrenarrow_forward
- Which of the following statements does NOT agree with the tenets of Darwin's theory of evolution by means of natural selection? O A. The phenotypes of individuals in a population will differ and, in some cases, these differences are the result of traits passed down from parent to offspring. B. Phenotypes become more common over time if individuals with those phenotypes have higher reproductive success. O C. The fitness of an individual with a particular phenotype is independent of the environmental conditions it experiences. O D. Resources limit the total number of individuals in a population.arrow_forwardEuropean exploration of Eastern Canada began in earnest with the expedition of John Cabot in the late 1490s and continued into the 1550s when the word “Canada” began to appear on world maps.European genes entered into the gene pool of the natives of the land of Canada primarily as a result of Select one: a. migration b. genetic drift c. gene flow d. natural selection The Old Order Amish is a relatively small population of individuals found in the United States in Pennsylvania and Ohio. They are a very isolated population due to their strong religious beliefs and lifestyle that have continued for more than 200 years. They mostly select mates from within their own population, which has had significant effects on their gene pool.The effects on their gene pool is a result of Select one: a. non-random mating b. founder effect c. bottleneck effect d. mutationarrow_forwardChoose one sentence that best describes a consequence of genetic drift a. Alleles in small populations are less likely to become fixed than those in large populations b. Large populations tend to lose genetic diversity faster than small populations c. New mutations are equally frequent in large and small populations d. Small populations tend to lose genetic diversity faster than large populationsarrow_forward
- What branch of biology deals with the genetic makeup of populations? A. cytology B. ecology C. Mendelian genetics D. population genetics E. population ecologyarrow_forwardOne of the original Amish colonies rose from a ship of colonists that came from Europe. The ship’s captain, who had polydactyly, a rare dominant trait, was one of the original colonists. Today, we see a much higher frequency of polydactyly in the Amish population. This is an example of: a. natural selection b. genetic drift c. founder effect d. b and carrow_forwardWhat is the difference between artificial selection (e.g., greyhounds that are bred for speed) and natural selection? a. In artificial selection, the genetic variation introduced into the population is limited, but in natural selection, it is not b. In artificial selection, the environment is the selective force, while in natural selection, humans are the selective force c. In natural selection, the environment is the selective force, while in artificial selection, humans are the selective force d. Unlike other species, dogs are not subject to natural selection e. Both A & Carrow_forward
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