Campbell Biology in Focus (2nd Edition)
2nd Edition
ISBN: 9780321962751
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 21.4, Problem 1CC
What is the relative fitness of a sterile mule? Explain.
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Chapter 21 Solutions
Campbell Biology in Focus (2nd Edition)
Ch. 21.1 - Explain why genetic variation within a population...Ch. 21.1 - Of all the mutations that occur in a population,...Ch. 21.1 - Prob. 3CCCh. 21.2 - A population has 700 individuals, 85 of genotype...Ch. 21.2 - The frequency of allele a is 0.45 for a population...Ch. 21.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 21.3 - In what sense is natural selection more...Ch. 21.3 - Distinguish genetic drift from gene flow in terms...Ch. 21.3 - WHAT IF? Suppose two plant populations exchange...Ch. 21.4 - What is the relative fitness of a sterile mule?...
Ch. 21.4 - Explain why natural selection is the only...Ch. 21.4 - Prob. 3CCCh. 21 - Natural selection changes allele frequencies...Ch. 21 - No two people are genetically identical, except...Ch. 21 - Sparrows With average-sized w1ngs survive severe...Ch. 21 - If the nucleotide variability of a locus equals...Ch. 21 - There are 25 individuals in population 1, all with...Ch. 21 - A fruit fly population has a gene with two...Ch. 21 - FOCUS ON EVOLUTION Using at least TWO examples,...Ch. 21 - Prob. 9TYUCh. 21 - SYNTHESIZE YOUR KNOWLEDGE This kettle lake formed...
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- What is Marker Assisted Breeding?arrow_forwardWhat is the difference between relative dominance and relative density?arrow_forwardA tall true breeding plant was crossed with a dwarf true breeding plant. Tallis a dominant characteristic. The F1 generation self-fertilized. What are the probabilities for the F2 generation? a) the first plant to be dwarf b) the first plant being dwarf or tall c) the first three plants to be tall d) to have seven plants, that are tall and four dwarf e) that the first plant be tall, and that of the next four plants, to be tall and the other two dwarf. I need especially part-e) please don't forget to solve part-e) especially i'll upvotearrow_forward
- Given the results of our calculations of inclusive fitness for male pied kingfishers (Ceryle rudis) (see Table 13.1), isn’t it maladaptive to be a delayer? Why aren’t there any completely sterile helper male pied kingfishers? Please don't write from any online source.arrow_forwardAn otto hemp variety with the genotype RRbb is crossed with a Kush hemp variety rrBb (Given that RR is homozygous resistance to mildew, BB is homozygous large buds). What percent of fraction of the offsprings would have large buds and resistant to mildew? A)50% B)25% C)0% D)75%arrow_forwardA white flower is crossed with a purple flower, and the offspring exhibit incomplete dominance. A) What is the phenotypic ratio of the F1 generation offspring? What is the genotypic ratio of the F1 generation offspring? B) What is the phenotypic ratio of the F2 generation offspring? What is the genotypic ratio of the F2 generation offspring? Answer and work:arrow_forward
- a) An F1 x F1 self-fertilization gives a 9:7 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1? b) An F1 x F1 self-fertilization gives a 9:3:4 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1? c) An F1 x F1 self-fertilization gives a 15:1 phenotypic ratio in the F2. What phenotypic ratio would you expect if you test-crossed the F1?arrow_forwardAn individual expressing the dominant phenotypes for kernel color and texture could have one of four different genotypes. For each potential genotype, determine the expected frequency of each phenotypic combination which would be observed following a testcross. (Remember Purple: PP, Smooth: SS, Yellow: pp, Wrinkled: ss)arrow_forwardCross a true-breeding plant that produces yellow seeds with a plant that produces green seeds. a) Using the table below, specify the notation that you will use. b) What are the genotypes of the parent plants? c) Draw the Punnett Square for the cross. d) Write the expected genotypic ratio of the potential offspring. e) Write the expected phenotypic ratio of the potential offspring. Character Flower color Flower position Seed color Seed shape Pod shape Pod color Stem length ©2012 Pearson Education, Inc. Dominant Purple Axial Yellow Round Inflated Green Tall Traits Recessive White Terminal Green Wrinkled Constricted Yellow Dwarfarrow_forward
- Two true-breeding varieties of maize, one 11 cm high and the other 47 cm high were crossed and the resultant F1 hybrids were then crossed to generate the F2 . In the F2 there were a total of 13,923 plants with a continuous variation in heights between the two extremes and with only 3 plants as large as 47 cm high and 5 plants of 11 cm high. a) How many i) genes and ii) how many alleles are involved in determining height in this plant?arrow_forward1) In some species of pea plant, pea colour is determined by one pair of alleles and pea shape by another - the genes are on different chromosomes. A plant grown from a round green pea was self-pollinated. The following numbers of offspring were obtained: 95 green round, 28 white round, 30 green wrinkled, 11 white wrinkled. a) What is the ratio of the phenotypes in the offspring? b) In each pair of alleles, colour and shape, which allele is dominant and which recessive? c) what was the genotype of the parent(s)? Use a diagram to show how this explains the phenotype ratio of the offspring.arrow_forward41) A pea plant known to be heterozygous at three loci is test crossed. The progeny phenotypes and the frequencies are as follows: abç +++ abc +bc a++ ++c ab+ +b+ a+c 455 470 35 33 37 -- 35 460 475 bac +++ What is the linkage arrangement of the genes? a) abc b) bac c) acb e) ab are linked c assorts independently d) ac are linked b assorts independentlyarrow_forward
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