Tiny foxes live on the Channel Islands off the coastof Southern California; the adults weigh less than3 lbs. These so-called island foxes (Urocyon littoralis) derived from the mainland gray fox (Urocyoncinereoargenteus). Analysis of genome sequencesrevealed that unlike the mainland foxes, the foxeson a single island have shockingly little geneticdiversity.a. The genome of only one fox from each island wassequenced. How would the lack of genetic diversitybe evident in a single genome sequence?b. The populations of the foxes on each island aresmall. How might the low diversity have occurred?c. Why is low genetic diversity thought to lead tospecies extinction?d. Hypothesize as to why the Channel Island foxesare thriving without human assistance despite theirlack of genome sequence diversity

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Tiny foxes live on the Channel Islands off the coast
of Southern California; the adults weigh less than
3 lbs. These so-called island foxes (Urocyon littoralis) derived from the mainland gray fox (Urocyon
cinereoargenteus). Analysis of genome sequences
revealed that unlike the mainland foxes, the foxes
on a single island have shockingly little genetic
diversity.
a. The genome of only one fox from each island was
sequenced. How would the lack of genetic diversity
be evident in a single genome sequence?
b. The populations of the foxes on each island are
small. How might the low diversity have occurred?
c. Why is low genetic diversity thought to lead to
species extinction?
d. Hypothesize as to why the Channel Island foxes
are thriving without human assistance despite their
lack of genome sequence diversity

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