Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Chapter 23.3, Problem 3CC
WH AT IF? → Suppose two plant populations exchange pollen and seeds. In one population, individuals of geno-type AA are most common (9.000 AA. 900 Aa. 100 aa), while the opposite is true in the other population (100 AA, 900 Aa, 9.000 aa). If neither allele has a selective advantage, what will happen over time to the allele and genotype frequencies of these populations?
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Exercse 2 #1 - In what populations do we see the high frequencies (above 80%) of the allele associated with lighter
pigmentation?
O Chinese
O African
O Japanese
O Bangladeshi
V French
O Mongolian
V Italian
V German
O Indian
O Turkish
Indonesian
Question 2
Exercse 2 #4 - Why might some light-skinned populations, such as the Japanese, be missing the F374 allele?
O Some populations, such as Japanese, are only light-skinned because they avoid tanning.
O This allele does not cause depigmentation.
O There have been multiple, different mutations that have produced light skin in different populations.
The sampling of Japanese in this study probably did not capture the true incidence of the F374 allele in the population.
> Within a certain population, there are exactly 2 alleles at the T locus: T and t. Among the
entire population, 30% of the alleles are T. If this population is in Hardy Weinberg equilibrium, what
proportions (or percentages, however, you want to express it) will be TT, Tt, and tt? Show work.
In a population, there are 75 TT individuals, 25 Tt individuals, and 250 tt individuals.
What are the frequencies of T and t? Show work.
What are the "expected" numbers of each genotype? Show work.
Ís this population in Hardy Weinberg equilibrium? (don't do Chi², just compare your answer in
a)
b)
c)
part b io actual and it should be obvious.)
) Assume that, in a population of deer, two alleles exist for eye color. BB deer have blue eyes,
Bb deer have purple eyes, and bb deer have red eyes. Out of a population of 1000 deer, 490 have blue
eyes. You took notes on the amount of red and purple eyed deer, but your notebook fell in the mud and
those numbers are obscured. However, if the population is in…
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34. Which of the following statements about genetic
diversity is true?
(A) Genetic uniformity of a crop increases the
crop’s overall resistance to pests and
disease.
(B) Genetic resistance to pests and diseases can
be increased by crossing a crop plant with
ancestral varieties.
(C) Genetic engineering technology is used to
increase genetic diversity by creating new
species with synthetic genes.
(D) Genetic diversity within populations of
common crop species such as corn is
typically high.
(E) Genetic diversity is usually high in
endangered species.
Chapter 23 Solutions
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 - Prob. 3CCCh. 23.2 - A population has 700 individuals, 85 of genotype...Ch. 23.2 - Prob. 2CCCh. 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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