Results 211 to 220 of about 106,656 (261)

Early Founders and the Founder Effect

2019
This chapter discusses key social, geographic, and chronological patterns of early English development in New England, including the early European settlement patterns and how they have led to long-term sociolinguistic patterns in the region (the Founder Effect).
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On the founder effect and the evolution of altruistic traits

Theoretical Population Biology, 1976
The possible mechanisms for the establishment of altruistic traits in a popula- tion have been discussed by several workers (e.g., Haldane, 1932; Fisher, 1958; Hamilton, 1963, 1964a,b, 1973). In agreement with the terminology of previous authors, we adopt here the term altruist in its biological meaning for any inherited trait which reduces the fitness
Cohen, Dan, Eshel, Ilan
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Possible founder effects for FRAXE alleles

American Journal of Medical Genetics, 1999
To determine if FRAXE alleles may have haplotype associations with nearby microsatellites, we analyzed 149 unrelated control Caucasian X chromosomes for FRAXE GCC alleles along with five nearby microsatellites. The microsatellites included three that are new; GT25, CA4, and CA5 located approximately 24, approximately 48, and approximately 50 kb ...
P, Limprasert, N, Zhong, J R, Currie, W T, Brown   +3 more
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The founder effect and genetic disease of cattle

New Zealand Veterinary Journal, 1977
Abstract Extract The derivation of large populations of beef cattle from a smallgenetic pool has been a feature of the cattle industry in this country from the earliest days of settlement. In recent years the importation of small numbers of exotic beef cattle and the rapiddissemination of this genetic material, aided by artificial breeding techniques ...
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Dramatic founder effects in Amerindian mitochondrial DNAs

American Journal of Physical Anthropology, 1985
AbstractSouthwestern American Indian (Amerindian) mitochondrial DNAs (mtDNAs) were analyzed with restriction endonucleases and found to contain Asian restriction fragment length polymorphisms (RFLPs) but at frequencies very different from those found in Asia. One rare Asian HincII RFLP was found in 40% of the Amerindians. Several mtDNAs were discovered
D C, Wallace, K, Garrison, W C, Knowler
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The effect of age of founder on the probability of survival of a colony

Journal of Theoretical Biology, 1976
In Chapter Four of The Theory of Island Biogeography , MacArthur & Wilson (1967) considered briefly the problem of the relationship between the probability of survival of a newly-established colony and the age of its founder. Their discussion assumed that the age at which a propagule was most likely to establish a successful colony was the age at ...
J A, Williamson, B, Charlesworth
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Founder effect and genetic disease in Sottunga, Finland

American Journal of Physical Anthropology, 1988
AbstractPedigree data are analyzed in order to determine the factors responsible for the high frequencies of certain genetic disorders in an isolated Swedish‐speaking population of Finland's Å land archipelago. The founders of Sottunga are identified, and the genetic contributions of each founder to descending birth cohorts are estimated. Founders born
E, O'Brien, L B, Jorde, B, Rönnlöf, J O, Fellman, A W, Eriksson   +4 more
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Founder effect in an island population of bighorn sheep

Molecular Ecology, 2001
AbstractThe Tiburon Island population of desert bighorn sheep has increased in size from 20 founders in 1975 to approximately 650 in 1999. This population is now the only population being used as the source stock for transplantations throughout northern Mexico. To evaluate the genetic variation in this population, we examined 10 microsatellite loci and
P W, Hedrick, G A, Gutierrez-Espeleta, R N, Lee   +2 more
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Founder effects in modern populations

Science, 2018
Human Evolution The genomes of ancient humans can reveal patterns of early human migration (see the Perspective by Achilli et al. ). Iceland has a genetically distinct population, despite relatively recent settlement (∼1100 years ago). Ebenesersdottir et al.
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Founder effect of the C9 R95X mutation in Orientals

Human Genetics, 2003
A nonsense mutation at codon 95 (R95X) in the C9 gene is responsible for most Japanese C9 deficiency (C9D) cases, with a carrier frequency of 6.7%. Upon analysis of microsatellite markers and newly identified dinucleotide repeat number polymorphisms in the 3' flanking region of the C9 gene, a founder effect was demonstrated for the R95X mutation of the
Vahid, Khajoee, Kenji, Ihara, Ryutaro, Kira, Megumi, Takemoto, Hiroyuki, Torisu, Yasunari, Sakai, Jia, Guanjun, Park Myoung, Hee, Katsushi, Tokunaga, Toshiro, Hara   +9 more
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