What is adaptive radiation? Large-scale evolutionary patterns and trends in speciation The event when a species no longer has living members A lineage undergoes a burst of genetic divergences that gives rise to many species Changes in allele frequency that are always occurring in natural populations

What is adaptive radiation? Large-scale evolutionary patterns and trends in speciation The event when a species no longer has living members A lineage undergoes a burst of genetic divergences that gives rise to many species Changes in allele frequency that are always occurring in natural populations

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter12: Processes Of Evolution

Section: Chapter Questions

Problem 11SQ

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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.
Which of the following is NOT a component of the Theory of Evolution by Natural Selection? competition for food and space variation among species inheritance of acquired characteristics survival and reproduction
Which evolutionary process leads to environmental adaptations in a population? random mutations gene flow sexual selection natural selection
Which of the following forces of evolution tends to slow down population divergence and prevent speciation? Group of answer choices Sexual selection Genetic drift Gene flow Mutation Natural selection
If a species looks superficially the same after thousands of years, the most likely explanation is: there is no evolution happening to that population they have evolved a level of perfection so no changes are necessary the changes are not easily observed, such as changes in immunity or metabolism they have not experienced any Gene Flow 13
population of 600 scorpions was split into four populations when irrigation canals were built through their habitat. The four new populations were called the Northern, Southern, Eastern, and Western populations. Each new population consisted of about 150 individuals. The four populations continued to evolve, and no migration occurred among populations. One hundred generations later, each population still has about 150 individuals, and a biologist investigates them. Consider what a biologist expect to see in the four populations after 100 generations if the environment did not change for any of the populations. Would the biologist agree or disagree with the following statements? question 1 agree or disagree Differences among the four populations probably occurred when populations adapted to specific environments, because most evolution results in adaptation. question 2 agree or not Each population would probably have the same number of alleles—that is, versions of genes—than it…
The American flying squirrel and the flying phalanger of Australia live in similar environments and look very similar. However, they are not closely related. What type of evidence of evolution this refers to? * Temporal isolation Sexual selection Divergent Convergent evolution No answer
Why is genetic variation among individuals beneficial? Genetic variation staves off extinction because it creates a fit population. Genetic variation leads to more new traits in the population which means evolution can occur faster. More genetic variation means higher rate of survival versus species that have less genetic variation. Some individuals will have inherited traits that give them a competitive advantage that make them more likely to survive and reproduce.
Which part of these statements isn't right ? A species is a group of organisms that can potentially interbreed with one another to produce viable, fertile offspring. Speciation is when two new species form from one original one. Sympatric speciation occurs when there is a geographic separation of a population. Allopatric speciation occurs while the population remains in the same area. Adaptive radiation occurs when one species evolves into many to fill several different niches. Natural selection requires traits to be passed from parent to offspring, more offspring are produced than can survive creating competition, and inherited traits vary among offspring. Fossils, Anatomy and embryology, biogeography, and molecular biology all provide support for the theory of evolution. Evolution can be driven by many different things. Mutations are changes in DNA that create new alleles in a population. Gene flow is the flow of alleles in and out of a population resulting from the migration…
A population of birds lives on a mountain. In this population, there are red-winged birds, orange-winged birds, and blue-winged birds. A predatory snake eats more of the blue-winged birds because they are not well camouflaged on the red and orange plants that grow on the mountain. This is an example of which mechanism of evolution? Group of answer choices Gene flow Cryptic coloration Natural selection Sexual selection Genetic drift
Make or create one question about Speciation and ecology (Nature of species, reproductiva isolation, genetic drift and natural selection, geography of speciation, adaptive radiation and biological diversity, the peace of evolution). Just one question about any of this topics.
. The Process of Evolution by Natural Selection – Be able to explain the process of evolution by natural selection as it applies to a specific living thing using the outline below: Natural variations caused by random mutations (adaptations) in DNA exist within populations. Those with helpful adaptations survive an environmental change (maybe a predator.) The survivors breed, passing on the inherited mutation (adaptation) to offspring. The resulting population has more of the successful inherited mutation (adaptation) than the original population. Phylogenetic Trees Infer evolutionary relationships of living things by interpreting phylogenetic trees. Know the divisions of hierarchical classification. (DKPCOFGS) c. Differentiate between homologous and analogous (caused by convergent evolution) structures