Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 23, Problem 5IQ
Summary Introduction
To create: A concept map of microevolution.
Introduction: The field of biology that deals with the study of the composition of genetic material within a population is called population genetics. Certain factors that lead to the process of evolution are natural selection, genetic drift, mutation, and migration; all these lead to changes in the genetic composition.
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Chapter 23 Solutions
Study Guide for Campbell Biology
Ch. 23 - a. What is a major source of genetic variation for...Ch. 23 - In a population of 200 mice, 98 are homozygous...Ch. 23 - Use the allele frequencies you determined in...Ch. 23 - Practice using the Hardy-Weinberg equation so that...Ch. 23 - Prob. 5IQCh. 23 - Why hasnt the highly deleterious sickle-cell...Ch. 23 - a. What is Hardy-Weinberg equilibrium? b. Define...Ch. 23 - Prob. 2SYKCh. 23 - Prob. 1TYKCh. 23 - Prob. 2TYK
Ch. 23 - Prob. 3TYKCh. 23 - Prob. 4TYKCh. 23 - Mice have an estimated 1,000 olfactory receptor...Ch. 23 - Prob. 6TYKCh. 23 - If a population has the following genotype...Ch. 23 - In a population with two alleles, B and b, the...Ch. 23 - Prob. 9TYKCh. 23 - Prob. 10TYKCh. 23 - In a random sample of a population of shorthorn...Ch. 23 - Genetic drift is likely to be seen in a population...Ch. 23 - Porphyria variegata is a genetic disease...Ch. 23 - Cystic fibrosis is a very serious genetic disorder...Ch. 23 - Prob. 15TYKCh. 23 - Prob. 16TYKCh. 23 - Prob. 17TYKCh. 23 - Prob. 18TYKCh. 23 - Prob. 19TYKCh. 23 - Prob. 20TYKCh. 23 - Prob. 21TYK
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- Which of the following scenarios were most likely lead to a change in DNA that would increase genetic variation in the individuals offspring arrow_forwardFill in the following table with the appropriate population genetics modelarrow_forwardA meadow is home to a population of plants of a particular species. Among these individuals are 125 plants that have red flowers and 375 plants that have white flowers. The allele of the flower color gene that produces red flowers (R) is completely dominant over the white flower color allele (r). Approximately what percent of the plants in the meadow would be expected to have the Rr genotype? Group of answer choices a. 23% b. 33% c. 2% d. 76%arrow_forward
- Discuss the difference in the number of generations it took for your alleles to be fixed when you were selecting for round peas vs wrinkled peas. Which took more generations? How big was the difference? What do you think is the reason for this difference? find the answer on the website for how many generations it took? http://www.evo-ed.org/Pages/Peas/Farming/Farming.htmlarrow_forwardA meadow is home to a population of plants of a particular species. Among these individuals are 125 plants that have red flowers and 375 plants that have white flowers. The allele of the flower color gene that produces red flowers (R) is completely dominant over the white flower color allele (r). What is the total number of flower color alleles in this population of plants? a- 500 b- 2 c- 375 d- 1,000 e- 4arrow_forwardThe gel image below shows 7 alleles, let’s call them 1-7 in order of size, with 1 being the largest and 7 being the smallest. In this sample of 11 individuals, how many times does allele 3 appear? Please type your answer as a number, not a word. ANSWER: In the image below allele 3 appears ? times.arrow_forward
- Explain in 3 or 2 paragraphs -Genetic drift vs Gene flowarrow_forwardGenetic drift in sola can cause the loss of alleles and bottlenecks. Lay out your plan to avoid this issue.arrow_forwardWhich of the following is an example of genetic drift? Group of answer choices A-As global temperatures increase, alleles that confer resistance to heat become more prevalent B-Peter Parker gets irradiated and turns into Spider Man C-The American Bison was hunted almost to extinction very quickly, and only a few remained D-5% of your neighborhood moves to Canadarrow_forward
- If 60 percent of the loci in a gene pool are dominant for the hair color trait H, and 40 percent are recessive (h), then according to Hardy-Weinberg theory, what percentage of the individuals in the population will be recessive for this trait (hh)? A. 16 B. 40 C. 36 D. 24arrow_forwardIn an ideal population of plants with red (due to dominant “R” allele) or white flowers (due to recessive “r” allele), the frequency of white flowers is 9%. Draw a Punnett square and identify the location of the white flowered plants within the square using the color red. Identify where the “R” allele is designated on the Punnett square using the color green. What is the frequency of the “R” allele? a) 9% b) 30% c) 91% d) 70%arrow_forwardFor neutral loci in non-coding regions of the genome, what two factors determine the level of genetic variation in a population? (select one answer) A. Genetic drift and time B. Mutation rate and heritability C. Mutation rate and population size D. Gene flow and selection E. Recombination and independent assortmentarrow_forward
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