Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 22, Problem 4TY
Summary Introduction
Introduction: A group of organisms which are related and share a distinctive form are known as species. Members of the species living in a particular area at a particular time which are capable of interbreeding are known as a population. Populations change to produce new species over time.
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Adaptation can best be described as
A. The change in the genetic characteristics of a population of organisms over time
B. Evolutionary changes on a large scale
C. Gives us Genotype frequency of a population that is not evolving
D. Any feature of the organism that leads to improvement in performance in the environment
Natural selection works on
a.
individuals.
b.
genes.
c.
populations.
d.
species.
h
Evolution that results because certain genotypes have a higher reproductive success is based on
a. genetic variation. c. genetic drift.
b. natural selection. d. both a and b.
Chapter 22 Solutions
Biology
Ch. 22.1 - Prob. 1CCCh. 22.1 - Overview of Evolution Experimental Questions What...Ch. 22.1 - Overview of Evolution Experimental Questions...Ch. 22.1 - Overview of Evolution Experimental Questions...Ch. 22.2 - Prob. 1CSCh. 22.2 - Prob. 1CCCh. 22.2 - Prob. 2CCCh. 22.2 - Prob. 3CCCh. 22.3 - The Molecular Processes Concept Check: Why do...Ch. 22.3 - Prob. 1CS
Ch. 22.3 - Prob. 2CCCh. 22 - Prob. 1TYCh. 22 - Lamarcks vision of evolution differed from Darwins...Ch. 22 - Which of the following scientists influenced...Ch. 22 - Prob. 4TYCh. 22 - Vestigial structures are anatomical structures a....Ch. 22 - Which of the following is an example of a...Ch. 22 - Prob. 7TYCh. 22 - Prob. 8TYCh. 22 - Prob. 9TYCh. 22 - Prob. 10TYCh. 22 - Evolution that results in adaptation is rooted in...Ch. 22 - What is convergent evolution? How does it support...Ch. 22 - Prob. 3CQCh. 22 - Prob. 1COQCh. 22 - Prob. 2COQ
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- Alfred Russel Wallace and Charles Darwin argued that evolution by means of natural selection involves all of the following steps except: a. variation is present in all species b. species can produce more offspring than the environment can sustain c. all individuals within a species have equal chances to improve their fitness d. those individuals that are more fit will survive and reproduce in the greatest numbers e. over time, the species will evolve as the more fit individuals replace the less fit individualsarrow_forwardGenetic variations in natural populations develop due to: Select one: A. random mutations of the DNA. B. changes in diet. O C. environmental catastrophies. D. changes in the environment. E. individual activities.arrow_forwardWhich of the following statements is true? A. Evolution involves a change in gene frequencies from one generation to the next B. Natural selection is the only mechanism through which animals evolve to become adapted to their environment C. Genetic drift results in evolution but not adaptation to the environment D. For natural selection to occur, differences in genetically-based traits must result in differential reproductive success E. All of the above are truearrow_forward
- A. Genetic drift refers to a. change in the way the body functions as a result of stressors. b. changes in the DNA sequence, particularly in sex cells. c. random changes or accidents that reduce genetic variation in a population. B. All human cultures a. can be correlated with "races" in the past. b. are unchanging and eternal. c. can be ranked as "primitive" or "advanced". d. are integrated and complex. d. exchange of genes when outsiders migrate into an area.arrow_forwardNatural selection occurs when which of the following conditions are met? Group of answer choices a.Variations between individual organisms lead to differential survival chances. b.The conditions in an ecosystem support a wide range of living organisms c.Individual organisms depend on each other to obtain available resources. d. Habitat and nutrient resources in an area are plentiful over a long period of time.arrow_forwardAs a mechanism of evolution, natural selection can be most closely equated with a. random mating. b. genetic drift. c. unequal reproductive success. d. gene flow.arrow_forward
- Which of the following best explains the role mutations play in natural selection?A. Most mutations are negative and result in the extinction of the entire speciesB. Mutations may appear for one or two generations, but they usually disappear quickly.C. If the environment changes, an existing organism develops a mutation that will help them to survive.D. Some mutations give individuals an advantage in their environment, allowing them to survive and reproduce.D is my answer is it correct?arrow_forwardWhich of the following is correct regarding the process ofevolutionary change?a. an adapted individual is the one that survives and passes on itsgenes to offspring.b. changes in phenotype are passed on by way of the genotype tothe next generation.c. organisms are able to bring about a change in their phenotype.d. evolution is striving toward particular traits.e. All of these are correct.arrow_forwardDarwinian fitness is a measure of a. survival. b. reproductive success. c. heterozygosity of the gene pool. d. polymorphisms in a population.arrow_forward
- In Darwin's theory of natural selection, which of the following is a source of evolution: a. Individuals with random mutations who die without reproducing. b. Individuals with random mutations who are able to reproduce. c. Individuals who do not vary from their progenitors. d. Intelligent and purposeful design.arrow_forwardWhich statement is least relevant when examining traits considered as adaptations? A. Not every trait or use of a trait in an organism ia an adaptation. B. Mutations can result in maladaptive traits. C. Differences for a trait among populations or species are not always adapative D. Not every adaptation is perfect or unflawed.arrow_forwardWhich of the following is the most important trait in terms of evolutionary success a. production of fertile offspring b. ability to compete with other species c. resiliency agaist environmental stressors d. ability to acquire food and resources e. All of the abovearrow_forward
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