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Biology 30. Textbook "Inquiry into biology" by McGraw-Hill Ryerson. Page 692 Chapter 19 "genetic diversity in populations". Thank you! 12489217

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Thought Lab
19.1 The Spirit Bear
Target Skills
Describing the factors that cause gene
pool diversity to change
Applying quantitatively, the Hardy
Weinberg principle to published data, and
inferring the significance of the results
Assessing the role of the Hardy-Weinberg
principle in explaining natural phenomena
Procedure
Use the information and preceding table to answer the
following Analysis questions.
Analysis
1. Predict the frequency of the white coat allele in the
Kermode bear population of
A Kermode black bear mother and her cubs
a) Gribbell Island
b) Princess Royal Island
The Kermode bear (Ursus americanus kermodel) is a white
2. Predict the frequency of the heterozygous genotype
variety of black bear that is found only in small island
for coat colour in the Kermode bear population of
populations and in populations on the coastal mainland of
British Columbia. Known to local Aboriginal peoples as the
a) Gribbell Island
spirit bear, the Kermode is rare and people are unclear about
b) Princess Royal Island
how best to ensure its survival. Scientists know that its white
coat colour is due to a recessive allele. They rely on bear
3. Suggest why the frequency of the white coat allele
counts and DNA testing of hair samples to estimate the
is different on Gribbell Island and Princess Royal Island.
frequency and distribution of this allele.
4. Suggest why some conservationists are concerned
about inland black bears having access to the coastal
Estimated Frequency of White Kermode Bears
bears' territories.
on Two British Columbia Islands
5. Scientists are unsure if Kermode bears select mates
Location
Gribbell Island
Princess Royal Island
based on coat colour. Suggest how this form of
Frequency of
0.3
white bears
0.1
non-random mating might affect coastal black
bear populations.

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Subject: Biology, Genetics, Science

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