Biological Science (6th Edition)
6th Edition
ISBN: 9780321976499
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Emily Taylor, Greg Podgorski, Jeff Carmichael
Publisher: PEARSON
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Chapter 23, Problem 8TYU
MODEL Draw a small concept map (BioSkllls 12 ) showing how selection, genetic drift, gene flow, and mutation relate to
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Which of the evolutionary processes discussed in the material presented can introduce genetic variation into a population?
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The founder effect is a type of (genetic drift / gene flow) in which individuals in one small group of a large population (establish a new distant population / are the only survivors) and then reproduce.
Chapter 23 Solutions
Biological Science (6th Edition)
Ch. 23 - PROCESS OF SCIENCE In what sense is the...Ch. 23 - 2. Why isn’t inbreeding considered an evolutionary...Ch. 23 - 3. CAUTION Why is genetic drift aptly named?
a. It...Ch. 23 - 4. True or false? Gene flow can either increase or...Ch. 23 - 5. QUANTITATIVE In a population of 2500, how many...Ch. 23 - 6. In the 1700s and 1800s, royalty in Europe often...Ch. 23 - 7. CAUTION Determine what is incorrect in the...Ch. 23 - MODEL Draw a small concept map (BioSkllls 12 )...Ch. 23 - 9. QUANTITATIVE In humans, albinism is caused by...Ch. 23 - Prob. 10TYPSS
Ch. 23 - Are toucans important to tropical forests? Human...Ch. 23 - QUANTITATIVE Toucans can eat fruits with large...Ch. 23 - 13. Do these data illustrate directional,...Ch. 23 - 14. Large seeds carry more resources than small...Ch. 23 - 15. PROCESS OF SCIENCE The data in the graphs are...Ch. 23 - 16. SOCIETY If you were a journalist covering this...
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- INTERPRET DATA In a population at genetic equilibrium, the frequency of the homozygous recessive genotype (tt) is 0.16. What are the allele frequencies of T and t, and what are the expected frequencies of the TT and Tt genotypes?arrow_forwardINTERPRET DATA In a human population of 1000, 840 are tongue rollers (360 TT and 480 Tt), and 160 are not tongue rollers (tt). What is the frequency of the dominant allele (T) in the population?arrow_forwardIn which of the following pairs do both evolutionary processes introduce new genetic variation into a population? a. natural selection and genetic drift b. mutation and gene flow c. natural selection and gene flow d. gene flow and genetic driftarrow_forward
- a. What effect does combining genetic drift and natural selection have on beneficial mutations? b. How would you it change if population size increasesarrow_forwardUSIBG EVIDENCE FROM THE TEXT, how did natural selection determine the survival of medeival humans during the black death(bubonic plague)? Use the words: variation, natural selection, favorable traitsarrow_forwardReview darwin's theory of natural selection. Write a 1-2 paragraph reflection explaining a) what you learn from the evidence of revolution and b.) The connections you made with what you learn about darwin's theory of natural selection and how meet mutations play an important role in the natural selection.arrow_forward
- Which one of the four forces of evolution has the smallest effect on changing allele frequencies? a. Drift b. Gene flow c. Mutation d. Selectionarrow_forwardGive a summary and conclusion on fitness,rate of Evolution by natural selection and Darwin's evolutionarrow_forwardWhich scenario would most likely result in genetic drift? When predators are removed from an island, the island's population of finches grows larger. Climate change causes the arctic habitat of a population of ringed seals to become gradually warmer. Several individuals in a population of wolves are killed by ranchers when they attack a herd of cattle. A population of moose living at the base of a volcano is nearly wiped out when the volcano erupts.arrow_forward
- A. When genetic drift and natural selection are combined what happens to the deleterious allele. B. What changes would be caused by population size increasearrow_forwardForces are always acting on the genes of a population, causing natural selection to occur. Describe the forces that affect the genes in a population. Use details to support your answer.arrow_forwardA. Explain which force of evolution is seen here by a hybrid bird landing on an island that is not its home and breeding with the indigenous population. B. Explain which force of evolution randomly chooses an individual from a larger gene pool to form a new, smaller population with less genetic variety.arrow_forward
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