Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 19, Problem 26P
Wolves and coyotes can interbreed in captivity; and now, because of changes in their habitat distribution, they may have the opportunity to interbreed in the wild. To examine this possibility, mitochondrial DNA from wolf and coyote populations throughout North America
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Native American populations in North and South America have mitochondrial DNA haplotypes that can be traced to populations
in northeast Asia. The Aleut and Eskimo populations in the far northern parts of North America possess a subset of the same
haplotypes that link other Native Americans to Asia, and also have several additional haplotypes that can be traced to Asian
origins but are not found in native populations in other parts of the Americas.
Which statement offers a possible explanation for this observation?
The pattern of haplotypes in the Aleut and Eskimo populations suggests that their ancestors' migration into the
American Arctic regions was separate from the migrations that eventually populated the rest of North and
South America.
The subset of similar haplotypes between the two populations suggests that the Native American populations with a link
to Asia descended from the Aleut and Eskimo populations residing in the far northern parts of North America.
Sharing a subset of…
About 3 million years ago, the Isthmus of Panama (a narrow strip of land connecting
North and South America) formed, dividing marine organisms into Pacific and
Caribbean populations. Researchers have examined species of snapping shrimp on
both sides of the isthmus. Based on the morphological species concept, there
appeared to be seven pairs of species, with one species of each pair in the Pacific
and the other in the Caribbean. The different species pairs live at somewhat different
depths in the ocean. Using mitochondrial DNA sequences, the researchers
estimated phylogenies and found that each of these species pairs, separated by the
isthmus were indeed each other's closest relatives. The researchers investigated
mating in the lab and found that many species pairs were not very interested in
courting with each other, and any that did mate almost never produced fertile
offspring. Which process led to the formation of the species pairs of Pacific and
Caribbean snapping shrimp?
sympatric…
About 3 million years ago, the Isthmus of Panama (a narrow strip of land connecting North and South America) formed, dividing marine organisms into Pacific and Caribbean populations. Researchers have examined species of snapping shrimp on both sides of the isthmus. Based on the morphological species concept, there appeared to be seven pairs of species, with one species of each pair in the Pacific and the other in the Caribbean. The different species pairs live at somewhat different depths in the ocean. Using mitochondrial DNA sequences, the researchers estimated phylogenies and found that each of these species pairs, separated by the isthmus were indeed each other's closest relatives. The researchers investigated mating in the lab and found that many species pairs were not very interested in courting with each other, and any that did mate almost never produced fertile offspring. Use the species concepts to explain how the sister populations on opposite sides of the isthmus are true…
Chapter 19 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 19 - 17.1 Reciprocal crosses of experimental animals or...Ch. 19 - 17.2 How are some of the characteristics of the...Ch. 19 - 17.3 The human mitochondrial genome encodes...Ch. 19 - What is the evidence that transfer of DNA from the...Ch. 19 - Draw a graph depicting the relative amounts of...Ch. 19 - Prob. 6PCh. 19 - 17.7 What is the evidence that the ancient...Ch. 19 - 17.8 Outline the steps required for a gene...Ch. 19 - 17.9 Consider the phylogenetic tree presented in...Ch. 19 - Most large protein complexes in mitochondria and...
Ch. 19 - What insights have analyses of human mitochondrial...Ch. 19 - You are a genetic counselor, and several members...Ch. 19 - A mutation in Arabidopsis immutans results in the...Ch. 19 - What type or types of inheritance are consistent...Ch. 19 - You have isolated (1) a streptomycin-resistant...Ch. 19 - You have isolated two petite mutants, pet1 and...Ch. 19 - 17.15 Consider this human pedigree for a vision...Ch. 19 - A 50- year - old man has been diagnosed with MELAS...Ch. 19 - 17.17 The first person in a family to exhibit...Ch. 19 - Prob. 20PCh. 19 - Prob. 21PCh. 19 - 17.19 What is the most likely mode of inheritance...Ch. 19 - 17.20 In , the Russian Tsar Nicholaswas deposed,...Ch. 19 - 17.21 The dodo bird (Raphus cucullatus) lived on...Ch. 19 - Cytoplasmic male sterility (CMS) in plants has...Ch. 19 - 17.23 Wolves and coyotes can interbreed in...Ch. 19 - Prob. 27PCh. 19 - Prob. 28P
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