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 3TYK
Summary Introduction
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. Other selection processes that are involved in adaptive evolution involve the selection of a particular trait that gives rise to adaption according to the environment.
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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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- The shoot morphologies of the Arabidopsis plants below reflect their genotypes. Upper case gene symbols indicate wild type alleles, lower case symbols indicate mutant alleles. Arrowheads indicate a vegetative shoot. What is the genotype of plant 2? A. LFY AP1 TFL1 B. lfy ap1 TFL1 C. lfy AP1 TFL1 D. LFY ap1 TFL1 E. LFY AP1 tfl1arrow_forwardIn general, larger plants have larger organs. So, one option for increased yields is to breed and grow for the largest size possible. However, there are practical reasons to growing smaller plants. What are some drawbacks to breeding and growing increasingly large plants? List and briefly explain two possible reasons.arrow_forwardExperimental advantages of using pea plants include which ofthe following?a. They came in several different varieties.b. They were capable of self-fertilization.c. They were easy to cross.d. All of the above were advantagesarrow_forward
- The data presented in Part D shows the results of artificial selection for hairy Wisconsin Fast Plants. Identify the null hypothesis for this investigation? A. If the mean number of trichomes is greater in the second generation than in the parent population, then selection has occurred. B. There will be no difference between the mean number of trichomes in the second generation compared to the parent population. C. As a result of selection, the mean number of trichomes will be greater in the second generation. D. If plants with the most trichomes in the first generation are selected as parents, then the second generation will have more trichomes.arrow_forwardThe text explains that selective breeding involves breeding animals or plants for specific desirable traits. For example, humans bred different types of dogs to accomplish certain jobs. Farmers breed chickens for having meat and laying a greater amount of eggs. Cattle are often selectively bred either for more meat or for more milk production. The text also notes that breeding animals for size and strength interferes with natural animal processes. Based on this information presented in the text, who benefits from the traits different animals are bred for? a) humans breeding the animals b) the animals being bred by the humans c) both the humans breeding the animals and the animals being bred by the humans d) animals not being bred by humansarrow_forwardA consortium of dairy and beef farmers has hired you to study the evolutionary origins of domestic cattle. They particularly want to know whether the humped zebu cattle of Asia and the cattle of Africa are derived from different species of wild cattle than European breeds. Outline a complete research program to study this question. Describe the sequence of steps you would need to do, what kind of data you would collect, and the methods you could use to evaluate possible trees and branches.arrow_forward
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