BIOLOGY-TEXT
5th Edition
ISBN: 9781260169621
Author: BROOKER
Publisher: MCG
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Chapter 23.3, Problem 3EQ
Summary Introduction
To determine: The meaning of sexual selection with reference to experiments performed in figure 23.9 given in the text book.
Introduction: In 1998, Ole Seehausen and Jacques van Alphen investigated the role of sexual selection by performing experiments under two different light conditions. This was done to see sexual behavior in specific light conditions.
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Problem 2) Skin colour in dolphins is determined by a single
gene showing incomplete dominance giving rise to 3 phenotypes
Brown, Pink & White. A survey of a large population of dolphins
was carried out and the phenotypes recorded. However a student
who had some of the data stored on their phone fell overboard and
unfortunately the data was lost. The only data saved was that the
brown homozygotes (BB) were 59% of the population .
a) What would be the percentage of pink heterozygotes and white
homozygotes?
b) What percentage of the gametes that give rise to the next
generation of dolphins in this population will contain the white W
allele?
Please help me?? urgently needed
ALL WORKING MUST BE SHOWN
Problem 3)
Butterflies show 3 phenotypes due to incomplete dominance at the
D locus with alleles D' and DB giving green phenotype in
heterozygotes and yellow and blue in homozygotes
a) A population of butterflies showed 49% yellow, and 51% blue
and green. What percentage of the gametes for the next generation
would contain the DB allele?
b) In another population only 1% of the butterflies are blue, What
is the DY allele frequency?
c) If the butterflies were subject to predation by birds that could
easily detect blue & yellow individuals what effect would you
expect this to have on the genotype and allele frequencies over
time? Indicate possible percentages.
Chapter 23 Solutions
BIOLOGY-TEXT
Ch. 23.1 - Prob. 1CSCh. 23.2 - Prob. 1CCCh. 23.2 - Prob. 2CCCh. 23.2 - Prob. 3CCCh. 23.3 - Prob. 1CCCh. 23.3 - Prob. 1EQCh. 23.3 - Prob. 2EQCh. 23.3 - Prob. 3EQCh. 23.4 - Genetic Drift Concept Check: How does the...Ch. 23.4 - Prob. 1CS
Ch. 23.5 - Prob. 1CCCh. 23 - Population geneticists are interested in the...Ch. 23 - The Hardy-Weinberg equation characterizes the...Ch. 23 - Prob. 3TYCh. 23 - Prob. 4TYCh. 23 - Prob. 5TYCh. 23 - Prob. 6TYCh. 23 - Prob. 7TYCh. 23 - Prob. 8TYCh. 23 - Kimuras proposal regarding neutral variation...Ch. 23 - Populations that experience inbreeding may also...Ch. 23 - Prob. 1CQCh. 23 - Prob. 2CQCh. 23 - Prob. 3CQCh. 23 - Antibiotics are commonly used to combat bacterial...Ch. 23 - Discuss die similarities and differences among...
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