Campbell Biology in Focus
3rd Edition
ISBN: 9780134710679
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Rebecca Orr
Publisher: PEARSON
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Chapter 43.1, Problem 3CC
WHAT IF? Imagine two populations of a fish species, one in the Mediterranean Sea and one in the Caribbean Sea. Now imagine two scenarios: (1) The populations breed separately, and (2) adults of both populations migrate yearly to the North Atlantic to interbreed. Which scenario would result in a greater loss of genetic diversity if the Mediterranean population were harvested to extinction? Explain your answer.
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WHAT IF? Imagine two populations of a fish species,one in the Mediterranean Sea and one in the CaribbeanSea. Now imagine two scenarios: (1) The populationsbreed separately, and (2) adults of both populationsmigrate yearly to the North Atlantic to interbreed. Whichscenario would result in a greater loss of genetic diversityif the Mediterranean population were harvestedto extinction? Explain your answer.
asap please with good explanation
Scenario 1In the 1960s, a population of squirrels (Sciurus carolensis) was being studied in Alabama and the coat color of the squirrels was found to range from the more common gray color (dominant) to the less common red color (recessive). When they sampled an area, they found 536 gray squirrels and 64 red squirrels. Assume that the population is at Hardy-Weinberg equilibrium.
3A. Show your work to find the number of heterozygous squirrels.
Chapter 43 Solutions
Campbell Biology in Focus
Ch. 43.1 - Prob. 1CCCh. 43.1 - Prob. 2CCCh. 43.1 - WHAT IF? Imagine two populations of a fish...Ch. 43.2 - How does the reduced genetic diversity of small...Ch. 43.2 - Prob. 2CCCh. 43.2 - WHAT IF? In 2005, at least ten grizzly bears in...Ch. 43.3 - Prob. 1CCCh. 43.3 - Prob. 2CCCh. 43.3 - Prob. 3CCCh. 43.4 - How can the addition of excess mineral nutrients...
Ch. 43.4 - MAKE CONNECTIONS There are vast stores of organic...Ch. 43.5 - Prob. 1CCCh. 43.5 - Prob. 2CCCh. 43.6 - Prob. 1CCCh. 43.6 - Prob. 2CCCh. 43.6 - WHAT IF? Suppose a new fishery is discovered, and...Ch. 43 - Prob. 1TYUCh. 43 - Prob. 2TYUCh. 43 - Prob. 3TYUCh. 43 - Prob. 4TYUCh. 43 - Prob. 5TYUCh. 43 - Prob. 6TYUCh. 43 - Prob. 8TYUCh. 43 - FOCUS ON EVOLUTION The fossil record indicates...Ch. 43 - Prob. 10TYUCh. 43 - SYNTHESIZE YOUR KNOWLEDGE Big cats, such as the...
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- New Zealand snapper populations were found to be under the influence of genetic drift, suggesting overfishing was still an issue for them, despite the New Zealand fisheries estimating their total population size to be over 3 million. Which of the following is the best explanation for this observation? A) Pelagic fish, like the New Zealand snapper, often only have a few reproductive individuals, therefore their effective population size is actually much smaller than the total population size. B) Pelagic fish, like the New Zealand snapper, often have an equal sex ratio which affects the number of breeding individuals. C) Pelagic fish, like the New Zealand snapper, often have disassortative mating which affects the number of breeding individuals. D) Pelagic fish, like the New Zealand snapper, often have assortative mating which affects the number of breeding individuals.arrow_forwardTry to outline a scenario explaining the evolution of the three species shown in panel g. Use migration, mutation, genetic drift, selection, reproductive isolation, gene flow, extinction, and many generations in your scenario. Based on your scenario, what are the components that are necessary in a population in order for it to split or diverge into two new daughter species from a single ancestor (the parent species)?arrow_forwardChoose True for yes and False for no, for each of the statements 1) The distribution of the two species-C populations cannot be explained by two totally independent dispersal events by the common ancestor species of A and B. True or false 2) B must share a more recent common ancestor with C1 than it does with C2. True or falsearrow_forward
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- #8arrow_forwardPlease solvearrow_forward(b) Suppose that we want to model the evolution of the population of a cer- tain type of organisms. Observations indicate that if the population drops below a survival level of 10° individuals, it goes extinct. Moreover, the population growth is limited: the available resources of space and food can sustain at most 106 individuals. We treat the population size P(t) as a continuous function of time. (i) Explain briefly how the following model incorporates the above ob- servations: dP — К(А- Р)(Р — В), k>0, dt where P(t) denotes the population size at time t and B 0. dt Find the equilibrium values and determine their stability. [6]arrow_forward
- Scenario 1In the 1960s, a population of squirrels (Sciurus carolensis) was being studied in Alabama and the coat color of the squirrels was found to range from the more common gray color (dominant) to the less common red color (recessive). When they sampled an area, they found 536 gray squirrels and 64 red squirrels. Assume that the population is at Hardy-Weinberg equilibrium. 2B. What is the frequency of the dominant allele?(Put your answer here rounded to the nearest hundredth)arrow_forwardNonearrow_forwardDecide whether each of the following scenarios would lead to prezygotic or postzygotic reproductive isolation: a) Dragonflies from two different populations have genitals that do not match, so they can't mate successfully [Select ] b) Two different species of fish have very different courtship displays, but they can mate and produce a non-fertile offspring [Select] c) One species of plant flowers in the winter, while another flowers in early spring [ Select ] d) The gametes of two tree species can fuse, but a zygote does not form [ Select ] e) A mountain range separates two populations of snakes I Select]arrow_forward
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