3. What would happen if there was not a lot of variety in the bears when they first reached the island? 4. Using the 6 main points of Darwin's Theory of Evolution, describe how and why bears evolved in their new environment. (Include the words: overproduction, natural selection, competition, variation, adaptation, & speciation).

3. What would happen if there was not a lot of variety in the bears when they first reached the island? 4. Using the 6 main points of Darwin's Theory of Evolution, describe how and why bears evolved in their new environment. (Include the words: overproduction, natural selection, competition, variation, adaptation, & speciation).

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter1: Introduction To Biological Concepts And Research

Section: Chapter Questions

Problem 8TYK: Which of the following is not a component of Darwins theory as he understood it? a. Some individuals...

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Which of the following ideas is not included in Darwins theory? a. All organisms that have ever existed arose through evolutionary modifications of ancestral species. b. The great variety of species alive today resulted from the diversification of ancestral species. c. Natural selection drives some evolutionary change. d. Natural selection preserves advantageous traits. e. Natural selection eliminates adaptive traits.
Which of the following is not a component of Darwins theory as he understood it? a. Some individuals in a population survive longer than others. b. Some individuals in a population reproduce more thanothers. c. Heritable variations allow some individuals to compete moresuccessfully for resources. d. Mutations in genes produce new variations in a population. e. Some new variations are passed to the next generation.
Which of the following statements about evolutionary studies is not true? a. Biologists study the products of evolution to understand the processes causing it. b. Biologists design molecular experiments to examine evolutionary processes operating over short time periods. c. Biologists study the inheritance of characteristics that a parent acquired during its lifetime. d. Biologists study variation in homologous structures among related organisms. e. Biologists examine why a huge variety of species may inhabit a small island cluster.
When systematists study morphological or behavioral traits to reconstruct the evolutionary history of a group of animals, they assume that: a. similarities and differences in phenotypic characters reflectunderlying genetic similarities and differences. b. the animals use exactly the same traits to identify appropriatemates. c. differences in these traits caused speciation in the past. d. the adaptive value of these traits can be explained. e. variations in these traits are produced by environmentaleffects during development.
1. Choose one example of natural selection to investigate. Some examples of observed cases of natural selection include (but are not limited to): Cite information OA mussel population's response to the introduction of the Asian shore crab. DA peppered moth population's response to pollution (i.e., industrial melanism). O COVID-19: Virus Evolution. Highlighted means" CHOSEN TOPIC" 2. Research your specific example of natural selection to better understand how and why the population has changed over time. Organize your information into the presentation format below. Cite information. O Step by step explanation of how apopulation can change over time, using your example O Descriptlon of Inherlted varlatlon withiin the populatlon O Explanation of why some individuals are better able to survive and produce offspring O A description of the adaptation that is being favored by natural selection O Data to support explanations
1. Which among the following is NOT a principle of natural selection? a. The DNA sequence of the organism will change. b. The characteristics of organisms are inherited or passed from parent to offspring. c. Offspring vary among each other about their characteristics, and those variations are inherited. d. More offspring are produced than can survive. 2. Tawilis is a freshwater sardine endemic only in the Taal Lake in Batangas province. After several eruptions of the Taal volcano in the 21st century, the sardine population mentioned above rapidly dropped up to 82%. What best describe this scenario? a. mutation b. migration c. natural selection d. genetic drift
5. Which of the following evolutionary processes (leading to speciation) is based on random changes population gene frequencies, due to a sudden decline in population size, followed by a recovery? A. migration (like the evolution of Galapagos Island finches from one South American finch species) B. genetic drift (like the evolution of sinistral-coiling snails from dextral-coiling ancestral snails) C. mutation (like the evolution of a new strain of influenza virus from an old ancestral strain) D. natural selection (like the environmental selection of polar bears from ancestral brown bears) E. artificial selection (like the human-directed selection of friendly dogs from ancestral gray wolves)
2. What is the role of variation in evolution – if heterozygosity is reduced, what happens to the potential for evolution? The phenotype (and genotype) of a population is due to a "mosaic" of random and directed processes. Some of these have to do with history; some are related to adaptation, etc. As completely as possible, discuss the role of chance and direction in evolution and in determining the phenotype of a population.
5. Species can vary in several ways. Which of the following is one of Darwin's ideas that was accepted by most scientists of his time due to the large number of fossils being discovered at that time? OA Species vary around the world. O B. Species have specific adaptations to their local environment. •C. Species change over long periods of time. O D. Species that live in seawater can also live on mountains.
10. Many traits seen in organisms are wildly inefficient and prone to malfunction or injury. Why does this finding support the idea of evolution rather than an omnipotent designer? What would we expect for these traits in the intelligent design model? 11. Ants and termites both have highly complex social colonies with queens, workers, and soldiers. Ants evolved from wasps while termites evolved from cockroaches. In this context, are ants vs termites an example of convergent or parallel evolution? How do you know?
9. Which of the following statements best explains the Theory of Natural Selection? * A. Organs that are not used may disappear, while organs that are constantly used may develop B. In nature, the organism with desirable characteristics may survive, while those weaker traits may not C. Organisms develop desirable structures to survive in a given environment D. Acquired characteristics of parents can be passed on to offspring 10. Which of the following statements explains Lamarck’s Theory of Use and Disuse? * A. Body structures develop because they are used extensively B. Body structures develop because they are not use C. Body structures develop because of competition D. Body structures develop because of mutation
1. What do evolutionary trees show? What does a tree of life imply about all species living and extinct? 2. Briefly describe the process that causes a population to change by natural selection. 3. How might natural selection explain the history of the Hawaiian honeycreepers? 4. Breeders use _________to produce better crops and livestock. 5. How did Hutton and Lyell help to shape Darwin’s thinking? 6. What parts of Lamarck’s theory of evolution were incorrect? 7. How does artificial selection work? 8. Imagine that you are Darwin and you have just read Malthus’s ideas about population. Write down Malthus’s key ideas. Next to these ideas, write how they might apply to evolution.