BIOLOGY FULL TEXT W/MASTERING BIO MOD
10th Edition
ISBN: 9781323042380
Author: Campbell
Publisher: PEARSON
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Textbook Question
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)
50% long, 25% medium, 25% short
50% long, 50% medium, 0% short
D)
100% medium, 0% long, 0% short
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?
Activity 1
Write down the correct biological term for each of the following descriptions in the space provided.
DESCRIPTION
TERM
1.1
A cross involving a single characteristic
1.2
A cross involving two characteristics
A representation that traces the transmission of a characteristic over many
generations of a family
Allele that influences the phenotype only when in the homozygous
combination but not in the heterozygous condition
1.3
1.4
1.5
Allele that influences the phenotype whether in the homozygous or
heterozygous combination
1.6
Alternative forms of a gene found at the same locus
1.7
Characteristics controlled by alleles of a gene that are located on the sex
chromosomes
Cross involving alleles of a gene that are equally dominant, leading to a third
phenotype which is a combination of the other two phenotypes
1.8
1.9
Cross involving alleles that are neither dominant or recessive, leading to an
intermediate phenotype
1.10
Cross involving characteristics controlled by dominant and…
Chapter 23 Solutions
BIOLOGY FULL TEXT W/MASTERING BIO MOD
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 - Prob. 7TYUCh. 23 - Prob. 8TYUCh. 23 - SYNTHESI2E YOUR KNOWLEDGE This kettle lake forracd...
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