MasteringBiology with Pearson eText -- ValuePack Access Card -- for Campbell Biology
11th Edition
ISBN: 9780134472942
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece
Publisher: PEARSON
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Chapter 23.2, Problem 3CC
WHAT IF? → A locus that affects susceptibility to a degener-ative bram discasc has two alleles, V and v. In a population, 16 people have genotype VV, 92 have geootype Vv, and 12 have genotype vv. Is this population evolving? Explain.
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In flies, long wings are a dominant trait, and short wings are a recessive trait. Medium wings are the heterozygous
trait. Based on this information, if a homozygous long-winged fly is crossed with another a heterozygous'fly, their
offspring will have which percentages for long, medium, and short wings? Assume random chromosome segregation.
17)
A)
25% long, 75% medium, 0% short
B)
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50% long, 50% medium, 0% short
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Phenotype to Population
1. Describe how the phenotype of individuals with sickle-cell disease influences how
common the Hbs allele is in the population: Do individuals with sickle cell disease
typically have many offspring? What effect does the fact that individuals with
sickle-cell disease do not produce many offspring have on the frequency of the Hbs
allele in the population over time? Given this, do you expect the Hbs allele to be
common or rare in populations?
which of the multiple choice?
Chapter 23 Solutions
MasteringBiology with Pearson eText -- ValuePack Access Card -- for Campbell Biology
Ch. 23.1 - Explain why genetic Variation within a population...Ch. 23.1 - Ot all the mutations that occur in a population,...Ch. 23.1 - MAKE CONNECTIONS If a population stopped...Ch. 23.2 - A population has 700 individuals, 85 of genotype...Ch. 23.2 - The frequency of allele a is 0.45 for a population...Ch. 23.2 - WHAT IF? A locus that affects susceptibility to a...Ch. 23.3 - In what sense is natural selection more...Ch. 23.3 - Distinguish genetic draft from gene flow in terms...Ch. 23.3 - WH AT IF? Suppose two plant populations exchange...Ch. 23.4 - What is the relative fitness of a sterile mule?...
Ch. 23.4 - Explain why natural selection is the only...Ch. 23.4 - Prob. 3CCCh. 23 - Typically. most of the nucleotide variabillity...Ch. 23 - Is it circular reasoning to calculate p ond q from...Ch. 23 - Would two small, geographically isolated...Ch. 23 - How might secondary sex characteristics in males...Ch. 23 - Natural selection changes allele frequencies...Ch. 23 - Prob. 2TYUCh. 23 - Prob. 3TYUCh. 23 - There are 25 individuals in population 1, all with...Ch. 23 - Prob. 5TYUCh. 23 - EVOLUTION CONNECTION Using at least two examples,...Ch. 23 - SCIENTIFIC INQUIRY INTERPRET THE DATA Researchers...Ch. 23 - Prob. 8TYUCh. 23 - SYNTHESI2E YOUR KNOWLEDGE This kettle lake forracd...
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- CH 1-4 X ← → C Maya X Credibi X app.wizer.me/learn/00E0A8 wizer.TIE a Maya S x BW x BW To-do X Assign x b M Dashb X BB x BW Figura X Figurat X A chicken breeder has chickens that are white, black, or speckled. Speckled chickens have both black and white feathers. The allele for white feathers is (W). The allele for black feathers is (B). Determine the genotypes of the rooster and hen that would breed the greatest percentage of speckled chickens. BW x WW Dashboard Incomp X Interac X STILCI GIESS LUUC BB x WW + with white (W). The heterozygous phenotype is brown and white V < ☆ GOarrow_forward. A gene called Q has two alleles, QFand QG, that encode alternative forms of a red blood cell protein thatallows blood group typing. A different, independentlysegregating gene called R has two alleles, RC and RD,permitting a different kind of blood group typing. Arandom, representative population of football fanswas examined, and on the basis of their blood typing,the following distribution of genotypes was inferred(all genotypes were distributed equally betweenmales and females):QFQFRCRC 202QFQG RCRC 101QGQG RCRC 101QFQFRCRD 372QFQG RCRD 186QGQG RCRD 186QFQFRDRD 166QFQG RDRD 83QGQG RDRD 83This sample contains 1480 fans in total.a. Is the population at Hardy-Weinberg equilibriumwith respect to either or both of the Q andR genes?b. After one generation of random mating within thisgroup, what fraction of the next generation of football fans will be QFQF(independent of their Rgenotype)?c. After one generation of random mating, what fraction of the next generation of football fans will…arrow_forwardQ5. Which of the following is FALSE? If a genetic disease reduces fertility and the allele that causes the disease offers no other advantage, the allele will likely eventually disappear, due to natural selection. Natural selection does not favor individuals who are homozygous for the sickle-cell allele, because these individuals typically die before they are old enough to reproduce. Individuals who are heterozygous HbA/HbS are protected from malaria, and this is why sickle-cell anemia persists in wetter, mosquito-prone regions in Africa. O In regions where malaria does not occur, individuals who are heterozygous HbA/HbS have a selective advantage over those who are homozygous for the normal hemoglobin allele (HbA).arrow_forward
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