Choose all of the correct statements about complex adaptations: Complex adaptations might evolve through a combination of of gene recruitment and promiscuous proteins. The parts of a complex adaptation may have evolved for a different function originally. Complex adaptations require all parts of the adaptation to evolve simultaneously. Complex adaptation do not evolve by natural selection. Complex adaptations are composed of multiple, different traits, such as behavior and physiology. Complex adaptations are 'irreducibly complex'. Complex adaptations are the result of parallel evolution. omplex adaptations always take thousands of years to evolve.

Choose all of the correct statements about complex adaptations: Complex adaptations might evolve through a combination of of gene recruitment and promiscuous proteins. The parts of a complex adaptation may have evolved for a different function originally. Complex adaptations require all parts of the adaptation to evolve simultaneously. Complex adaptation do not evolve by natural selection. Complex adaptations are composed of multiple, different traits, such as behavior and physiology. Complex adaptations are 'irreducibly complex'. Complex adaptations are the result of parallel evolution. omplex adaptations always take thousands of years to evolve.

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter23: Principles Of Evolution

Section: Chapter Questions

Problem 3RQ

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Concept explainers

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.

Question

Choose all of the correct statements about complex adaptations:
Complex adaptations might evolve through a combination of of gene recruitment and promiscuous proteins.
The parts of a complex adaptation may have evolved for a different function originally.
Complex adaptations require all parts of the adaptation to evolve simultaneously.
Complex adaptation do not evolve by natural selection.
Complex adaptations are composed of multiple, different traits, such as behavior and physiology.
Complex adaptations are 'irreducibly complex'.
Complex adaptations are the result of parallel evolution.
omplex adaptations always take thousands of years to evolve.

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EVOLUTION LINK Write short paragraphs explaining each of the following statements: (a) Natural selection chooses from among the individuals in a population those most suited to current environmental conditions. It does not guarantee survival under future conditions. (b) Individuals do not evolve, but populations do. (c) The organisms that exist today do so because their ancestors had traits that allowed them and their offspring to thrive. (d) At the molecular level, evolution can take place by the replacement of one nucleotide by another. (e) Evolution is said to have occurred within a population when measurable genetic changes are detected.
EVOLUTION LINK What is the common ground between evolutionary biologists and developmental biologists who have adopted the perspective known as Evo Devo?
Measuring Genetic Diversity in Human Populations Successful adaptation is defined by: a. evolving new traits b. producing many offspring c. leaving more offspring than others d. moving to a new location
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
The fact that DNA sequences are more similar in more closely related organisms is evidence of what? a. optimal design in organisms b. adaptation c. mutation d. descent with modification
Match the modes of natural selection with their best description. ____ stabilizing a. eliminates extreme forms of a trait ____ directional b. eliminates midrange forms of a trait ____ disruptive c. shifts phenotypes in one direction
What is the difference between micro- and macroevolution? a. Microevolution describes the evolution of small organisms, such as insects, while macroevolution describes the evolution of large organisms, like people and elephants. b. Microevolution describes the evolution of microscopic entities, such as molecules and proteins, while macroevolution describes the evolution of whole organisms. c. Microevolution describes the evolution of populations, while macroevolution describes the emergence of new species over long periods of time. d. Microevolution describes the evolution of organisms over their lifetimes, while macroevolution describes the evolution of organisms over multiple generations.
Which of the following situations will lead to natural selection? a. The seeds of two plants land near each other and one grows larger than the other. b. Two types of fish eat the same kind of food, and one is better able to gather food than the other. c. Male lions compete for the right to mate with females, with only one possible winner. d. all of the above
For centuries, animal breeders have used artificial selection to increase the speed of racehorses. The results of such efforts are illustrated in a graph that identifies how quickly winning horses ran the 1-mile track at the Kentucky Derby, a famous race held annually at Churchill Downs, Kentucky. (The time it takes a horse to run a track of fixed length is inversely proportional to the horses speed.) Based on the data in the graph, has artificial selection increased the speed of horses consistently between 1900 and 2000? Do you think that artificial selection can increase the speed of racehorses in the future?
Evolution is based on which of the following concepts? (a) organisms share a common origin (b) over time, organisms have diverged from a common ancestor (c) an animals body parts can change over its lifetime, and these acquired changes are passed to the next generation (d) a and b (e) a, b, and c
Sexual selection (a) occurs mainly among animals that practice polyandry (b) occurs when animals are very similar in their ability to compete for mates (c) results in animals that have lower direct fitness (d) occurs mainly among animals that practice polygyny (e) is a form of natural selection
Figure 18.23 Which of the following statements is false? Punctuated equilibrium is most likely to occur in a small population that experiences a rapid change in its environment. Punctuated equilibrium is most likely to occur in a large population that lives in a stable climate. Gradual speciation is most likely to occur in species that live in a stable climate. Gradual speciation and punctuated equilibrium both result in the evolution of new species.