1). Penguins in Stewart Island have a recessive mutation "twist-tail' that causes problems in the control of direction when swimming. In 2008 a survey of a large, freely interbreeding, population of 2,732 penguins revealed 316 with twist-tail phenotype. а) What percentage of the penguin population would you expect to be heterozygous at the twist-tail locus ? Where there is no mutation, migration or selection what percentage of the next generation would be homozygous dominants, heterozygotes and homozygous recessives? b)

Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter21: Microevolution: Genetic Changes Within Populations
Section: Chapter Questions
Problem 1TYK: The reason spontaneous mutations do not have an immediate effect on allele frequencies in a large...
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1). Penguins in Stewart Island have a recessive mutation "twist-tail" that causes problems
in the control of direction when swimming. In 2008 a survey of a large, freely
interbreeding, population of 2,732 penguins revealed 316 with twist-tail phenotype.
а)
What percentage of the penguin population would you expect to be heterozygous at
the twist-tail locus ?
Where there is no mutation, migration or selection what percentage of the next
generation would be homozygous dominants, heterozygotes and homozygous
recessives?
b)
c)
In 2010 the population had risen to 3,800 individuals when the surrounding sea
became home to a large pod of killer whales which eliminated all the penguins with
twist-tail phenotype which were easy to catch. What would be the dominant and
recessive allele frequencies in the next generation?
Transcribed Image Text:1). Penguins in Stewart Island have a recessive mutation "twist-tail" that causes problems in the control of direction when swimming. In 2008 a survey of a large, freely interbreeding, population of 2,732 penguins revealed 316 with twist-tail phenotype. а) What percentage of the penguin population would you expect to be heterozygous at the twist-tail locus ? Where there is no mutation, migration or selection what percentage of the next generation would be homozygous dominants, heterozygotes and homozygous recessives? b) c) In 2010 the population had risen to 3,800 individuals when the surrounding sea became home to a large pod of killer whales which eliminated all the penguins with twist-tail phenotype which were easy to catch. What would be the dominant and recessive allele frequencies in the next generation?
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