Sentences with phrase «as genetic drift»

A weakness of the correlational approach used here is the degree to which this pattern of results could occur as a result of random processes such as genetic drift (fluctuations in allele frequency due to chance; Keinan et al., 2007).

Not exact matches

And like Evolution, the Theory of Mechanics has been supplanted by more complex and more accurate theories (in the case of Mechanics, both Quantum Mechanics and Relativity have arisen to deal with its flaws; in the case of Evolution, the technical theories - such as gene borrowing and virus - guided genetic drift - do not have catchy names).

You see evolution is defined as «change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift.»

Genetic drift was embraced as an additional mechanism of evolutionary development in the modern synthesis of the theory.

As for the disparity in skull features, a number of factors, including diet and random genetic drift, could account for differences in appearance between modern Native Americans and Kennewick Man.

With co-authors John C. Besley (Michigan State University) and Joseph Steinhardt (Cornell), McComas will publish study results as «Factors influencing U.S. consumer support for genetic modification to prevent crop disease» in the July 2014 journal Appetite — right about the time airborne P. infestansspores are drifting through home - garden tomato crops.

The difference between Paleoamerican and modern Native American facial features is likely a combination of additional waves of migration from Siberia, via Beringia, and genetic drift, a gradual change in appearance and other traits as populations divide, migrate and adapt, says Jim Chatters, a Seattle - area anthropologist who led the multinational study of Naia.

«Our findings suggest a paradigm shift from thinking of HPV16 as a single viral entity undergoing slow genetic drift to considering each HPV16 isolate to be a separate virus, with possibly different carcinogenic potential, which will necessarily lead to a re-interpretation of HPV natural history and carcinogenesis,» says lead author Lisa Mirabello of the National Cancer Institute, NIH.

The rapid genetic drift between isolated breeds (pairwise FST of 25 % — 30 % among any given set of breeds with very few pairs of breeds having significantly smaller FST) enables efficient mapping of the genomic regions underlying variation, even in some cases with un-genotyped collections such as museum specimens.

The isolated populations then undergo genotype and phenotype divergence as natural selection pressures differ in their separate ecosystems, they undergo genetic drift in separated populations, and different mutations differ in their isolated gene pools.

The result suggests that structural errors accumulate in large organisms such as humans due to random genetic drift.

As a consequence, the possibility has been raised that admixture did occur, but the early Europeans of modern anatomy were not too different genetically from Neandertals, or else that most Neandertal haplotypes were lost through a process of lineage sorting, i.e. by genetic drift [5].

► An astronaut removes six large canisters of genetic research materials from a drifting space station with lights flashing and sirens blaring; a giant spiny rat chases her and pounds on the escape hatch window with paws and tentacles, cracking it (we can not see its face) as the escape pod launches and we see the space station explode into fireballs that fill the screen and soon after we see the cracked pod hatch window break apart and the pod explodes into chunks of flaming debris (the astronaut is certainly dead although we do not see her after the explosion).

I wrote and wrote for a couple years, creating 400,000 words as I explored how genetic drift influenced the social structure in my world of the Far Isles Half - Elven.

The gradual loss of alleles from populations is known as «genetic drift», this is a random process which occurs naturally in all populations; it may not matter much in the large gene pool of a large population, but becomes increasingly serious over time in the small gene pools of smaller populations.

That is, the stochastic nature of genetic drift becomes less important as selection can more thoroughly choose among offspring.