EBK GENETICS: FROM GENES TO GENOMES
6th Edition
ISBN: 9781260041255
Author: HARTWELL
Publisher: MCGRAW HILL BOOK COMPANY
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Chapter 21, Problem 30P
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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Chapter 21 Solutions
EBK GENETICS: FROM GENES TO GENOMES
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