CAMPBELL BIOL UMD+MASTERBIO ACCESS >BI
10th Edition
ISBN: 9781269920483
Author: Reece
Publisher: PEARSON C
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Chapter 51.3, Problem 2CC
MAKE CONNECTIONS Ø Balancing selection can maintain variation at a locus (see Concept 23.4). Based on the foraging experiments described in this chapter, devise a simple hypothesis to explain the presence of both forR and forS alleles in natural fly populations.
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VISUAL SKILLS Consider a population in which heterozygotes at a certain locus have an extreme phenotype(such as being larger than homozygotes) that confersa selective advantage. Compare this description to themodels of selection modes shown in Figure 23.13. Doesthis situation represent directional, disruptive, or stabilizing selection? Explain your answer.
MAke ConneCtIonS Suppose that a sudden changein environmental conditions caused a substantial dropin a population’s carrying capacity. Predict how naturalselection and genetic drift might affect this population.(See Concept 23.3.)
Based on (MS-LS4-4) standard(grade8) - Mathematical Representations of Natural Selection:
Most scientists think that a small group of finches colonized the Galápagos Islands thousands of years ago. They would have been the only seed-eating birds on the islands. Suppose one island was very dry and another had plentiful rainfall.
Q)How would the finch populations on these islands change over time? Reference to the evidence from data (pictures of Data Set C - Galapagos Islands Finch - 25cm Average Rainfall and Data Set C - Galapagos Islands Finches - Rainfall Effect are attached) and reasoning to support your claim to support your claim. Kindly use also examples outside of the prompt and vocabulary for explanation.
Chapter 51 Solutions
CAMPBELL BIOL UMD+MASTERBIO ACCESS >BI
Ch. 51.1 - If an egg rolls out of the nest, a mother greylag...Ch. 51.1 - WHAT IF? Suppose you exposed various fish species...Ch. 51.1 - MAKE CONNECTIONS How is the lunar-linked rhythm...Ch. 51.2 - How might associative learning explain why...Ch. 51.2 - Prob. 2CCCh. 51.2 - Prob. 3CCCh. 51.3 - Why does the mode of fertilization correlate with...Ch. 51.3 - MAKE CONNECTIONS Balancing selection can maintain...Ch. 51.3 - WHAT IF? Suppose an infection in a common...Ch. 51.4 - Prob. 1CC
Ch. 51.4 - Prob. 2CCCh. 51.4 - Prob. 3CCCh. 51 - How is migration based on circannual rhythms...Ch. 51 - Prob. 51.2CRCh. 51 - In some spider species, the female eats the male...Ch. 51 - Prob. 51.4CRCh. 51 - Prob. 1TYUCh. 51 - Prob. 2TYUCh. 51 - Female spotted sandpipers aggressively court males...Ch. 51 - Prob. 4TYUCh. 51 - Although many chimpanzees live in environments...Ch. 51 - Prob. 6TYUCh. 51 - Level 3: Synthesis/Evaluation 7. DRAW IT You are...Ch. 51 - EVOLUTION CONNECTION We often explain our behavior...Ch. 51 - Prob. 9TYUCh. 51 - SCIENCE, TECHNOLOGY, AND SOCIETY Researchers are...Ch. 51 - WRITE ABOUT A THEME: INFORMATION Learning is...Ch. 51 - SYNTHESIZE YOUR KNOWLEDGE Acorn woodpeckers...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Need help It has been found that rats with the genotype Ww are more resistant to Warfarin than either WW that have a VitK deficiency or ww that are very susceptible. Given that the relative fitness values are 1 for Ww, 0.37 for WW and 0.19 for ww, predict the allele and genotype frequencies once Hardy Weinberg equilibrium is established for a rat population in a grain elevator where warfarin is used continually. Suggest what might happen if warfarin use was stopped.arrow_forwardMAKE CONNECTIONS Explain how natural selection could increase the resemblance of a harmlessspecies to a distantly related harmful species. In addition to selection, what else could account for a harmlessspecies resembling a closely related harmful species? (See Concept 22.2.)arrow_forwardQ: In a certain species of plants, violet flower color (V) is dominant over white flower color (v). If p = 0.4 and q = 0.6 in a population of 500 plants, I want you to explain why red is wrong and highlighted is right.arrow_forward
- Kingma et al. (2011) found that in the purple-crowned fairy-wren, most subordinate helpers at the nest feed full siblings or half siblings, but some helpers are unrelated to the nestlings they assist. What Darwinian puzzle is created by these findings, and how might you solve the puzzle by using inclusive fitness theory? What predictions follow from the explanation(s) that you propose?arrow_forwardEcology regarding sexual selection: In zebra finch females prefer males who have a larger yellow cheek patch. Researchers investigating this preference think that females must benefit from choosing males with large cheek patches. Provide three hypotheses regarding the direct, or indirect benefits, she might receive.arrow_forwardINTERPRET DATA The genotype frequencies of a population are determined to be 0.6 BB. 0.0 Bb, and 0.4 bb. Is it likely that this population meets all the conditions required for genetic equilibrium?arrow_forward
- Random events are know to contribute to changes in allele frequencies. Do these random events typically play a greater role when the population size is large or small?arrow_forwardIn the purple-crowned fairy-wren (Malurus coronatus), most subordinate helpers at the nest feed full siblings or half siblings, but some helpers are unrelated to the nestlings they assist (Kingma et al. 2011). What Darwinian puzzle is created by these findings, and how might you solve the puzzle by using inclusive fitness theory, as Uli Reyer did in his pied kingfisher study? What predictions follow from the explanation(s) that you propose? Please Do not write from an online sourcearrow_forwardScenario 2In the year 2015, another group of scientists studied the squirrel coat color and found that the population of squirrels had increased. They found 850 squirrels in the same area, of which 115 had a red coat. Assume that the population is in Hardy Weinberg’s equilibrium. 6A. Show your work to identify the number of homozygous dominant squirrels.arrow_forward
- S uppose that you expect a 2:1 male: female sex ratio in a certain insect population. You collect 90 insects at random of which 70 are males and 20 are females. What is the expected number of males under your null hypothesis?arrow_forwardBook: Greatest Show on Earth Answer both question below. Explain what Dawkins says selection is acting on in chapter 2 and how that variation is distributed throughout a population (gene pool) (blending vs. independent assortment). -150 word minimum In chapter 3, Dawkins suggests that selection is powerful yet unconscious of its actions ("without any understanding at all"). He uses a variety of examples to highlight how various organisms drive selection, sometimes consciously and sometimes unconsciously, by mediating the breeding process. Using one of the examples explain how some organisms unconsciously drive the selection of others. -150 word minimumarrow_forwardBook: Greatest Show on Earth Answer the question below. In chapter 3, Dawkins suggests that selection is powerful yet unconscious of its actions ("without any understanding at all"). He uses a variety of examples to highlight how various organisms drive selection, sometimes consciously and sometimes unconsciously, by mediating the breeding process. Using one of the examples explain how some organisms unconsciously drive the selection of others. -150 word minimumarrow_forward
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