999 resultados para founders (originators)


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Because today is the birthday of Thomas Edison who was born in 1847 in Ohio, I suppose that you would expect me as today's speaker to have a special obligation to be inventive. Some of you probably know that for several years, Edison's birthday has been observed as National Science Youth Day, which sounds to me like a rather interesting invention itself. Youth is not a science and science is certainly not a youth, but I am perfectly willing to go along with the national celebration and wish a happy birthday to any science youth that I might happen to encounter. I would encourage you to do the same.

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Program brochure for 150th Founders' Convocation program held at Richardson Fine Arts Center, Mitchell Auditorium on Thursday, February 11th, 2016.

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Program brochure for 2013 Founders' Convocation program held at Richardson Fine Arts Center, Mitchell Auditorium on Thursday, February 7th, 2013.

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Program brochure for Founders' Convocation held at Richardson Fine Arts Center, Mitchell Auditorium on Thursday, February 9th, 2012.

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Recently, Y chromosome markers have begun to be used to study Native American origins. Available data have been interpreted as indicating that the colonizers of the New World carried a single founder haplotype. However, these early studies have been based on a few, mostly complex polymorphisms of insufficient resolution to determine whether observed diversity stems from admixture or diversity among the colonizers. Because the interpretation of Y chromosomal variation in the New World depends on founding diversity, it is important to develop marker systems with finer resolution. Here we evaluate the hypothesis of a single-founder Y haplotype for Amerinds by using 11 Y-specific markers in five Colombian Amerind populations. Two of these markers (DYS271, DYS287) are reliable indicators of admixture and detected three non-Amerind chromosomes in our sample. Two other markers (DYS199, M19) are single-nucleotide polymorphisms mostly restricted to Native Americans. The relatedness of chromosomes defined by these two markers was evaluated by constructing haplotypes with seven microsatellite loci (DYS388 to 394). The microsatellite backgrounds found on the two haplogroups defined by marker DYS199 demonstrate the existence of at least two Amerind founder haplotypes, one of them (carrying allele DYS199 T) largely restricted to Native Americans. The estimated age and distribution of these haplogroups places them among the founders of the New World.

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Mode of access: Internet.

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"This volume is in one sense a second edition of a tract which was printed in 1849, entitled 'Collections concerning the early history of the founders of a New Plymouth, the first colonists of New England'"--Preliminary notice.