Evolutionary perspectives on African North American genetic diversity: Origins and prospects for future investigations

2021 ◽  
Author(s):  
Jennifer Caldwell ◽  
Fatimah L. C. Jackson
Keyword(s):  
Genetic Diversity ◽  
North American ◽  
Evolutionary Perspectives ◽  
American Genetic

Variation in Genetic Diversity across the Range of North American Brown Bears

1998 ◽  
Vol 12 (2) ◽  
pp. 418-429 ◽  
Author(s):  
David Paetkau ◽  
Lisette P. Waits ◽  
Peter L. Clarkson ◽  
Lance Craighead ◽  
Ernie Vyse ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
North American ◽  
Brown Bears

scholarly journals Analysis of the reported use of practice‐based competencies by North American genetic counselors during the COVID‐19 pandemic

2021 ◽  
Author(s):  
Naomi E. Wagner ◽  
Sarah Witherington ◽  
Larissa Waldman ◽  
Lauren Ryan ◽  
Melanie W. Hardy
Keyword(s):  
North American ◽  
Genetic Counselors ◽  
American Genetic

scholarly journals Genetic diversity of North American captive-born gorillas (Gorilla gorilla gorilla)

2013 ◽  
Vol 3 (1) ◽  
pp. 80-88 ◽  
Author(s):  
Noah D. Simons ◽  
Ronald S. Wagner ◽  
Joseph G. Lorenz
Keyword(s):  
Genetic Diversity ◽  
North American ◽  
Gorilla Gorilla ◽  
Gorilla Gorilla Gorilla

Geographic patterns of genetic diversity in North American trees: a continent-wide analysis

2021 ◽  
Author(s):  
Andrew V. Gougherty
Keyword(s):  
Genetic Diversity ◽  
Population Genetics ◽  
North America ◽  
North American ◽  
Tree Species ◽  
Geographic Patterns ◽  
Study Characteristics ◽  
Dispersal Traits ◽  
The Last Glacial Maximum ◽  
The Last Glacial

In the northern hemisphere, many species have been reported to have greater genetic diversity in southern populations than northern populations - ostensibly due to migration northward following the last glacial maximum (LGM). The generality of this pattern, while well-established for some taxa, remains unclear for North American trees. To address this issue, I collected published population genetics data for 73 North American tree species, and tested whether genetic diversity was associated with latitude or longitude and whether geographic trends were associated with dispersal traits, range or study characteristics. I found there were no general geographic patterns in genetic diversity, and the strength of the geographic gradients were not associated with any species or study characteristics. Species in the northern and western regions of North America tended to have more species with genetic diversity that declined with latitude, but most species had no significant trend. This work shows that North American trees have complex, individualistic, patterns of genetic diversity that may negate explanation by any particular dispersal trait or range characteristic.

scholarly journals Phylogeography and lineage-specific patterns of genetic diversity and molecular evolution in a group of North American skinks

2015 ◽  
Vol 116 (4) ◽  
pp. 819-833 ◽  
Author(s):  
Matthew A. Moseley ◽  
Christian L. Cox ◽  
Jeffrey W. Streicher ◽  
Corey E. Roelke ◽  
Paul T. Chippindale
Keyword(s):  
Genetic Diversity ◽  
Molecular Evolution ◽  
North American

scholarly journals Serial founder effects and genetic differentiation during worldwide range expansion of monarch butterflies

2014 ◽  
Vol 281 (1797) ◽  
pp. 20142230 ◽  
Author(s):  
Amanda A. Pierce ◽  
Myron P. Zalucki ◽  
Marie Bangura ◽  
Milan Udawatta ◽  
Marcus R. Kronforst ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Genetic Differentiation ◽  
Genetic Drift ◽  
North American ◽  
Range Expansion ◽  
Dispersal Ability ◽  
Founder Effects ◽  
Long Distance ◽  
Mobile Species ◽  
High Dispersal

Range expansions can result in founder effects, increasing genetic differentiation between expanding populations and reducing genetic diversity along the expansion front. However, few studies have addressed these effects in long-distance migratory species, for which high dispersal ability might counter the effects of genetic drift. Monarchs ( Danaus plexippus ) are best known for undertaking a long-distance annual migration in North America, but have also dispersed around the world to form populations that do not migrate or travel only short distances. Here, we used microsatellite markers to assess genetic differentiation among 18 monarch populations and to determine worldwide colonization routes. Our results indicate that North American monarch populations connected by land show limited differentiation, probably because of the monarch's ability to migrate long distances. Conversely, we found high genetic differentiation between populations separated by large bodies of water. Moreover, we show evidence for serial founder effects across the Pacific, suggesting stepwise dispersal from a North American origin. These findings demonstrate that genetic drift played a major role in shaping allele frequencies and created genetic differentiation among newly formed populations. Thus, range expansion can give rise to genetic differentiation and declines in genetic diversity, even in highly mobile species.

scholarly journals Do founder size, genetic diversity and structure influence rates of expansion of North American grey squirrels in Europe?

2014 ◽  
Vol 20 (8) ◽  
pp. 918-930 ◽  
Author(s):  
A. L. Signorile ◽  
J. Wang ◽  
P. W. W. Lurz ◽  
S. Bertolino ◽  
C. Carbone ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
North American ◽  
Genetic Diversity And Structure ◽  
Grey Squirrels
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