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They also examined the findings in the context of educational attainment, which is partly determined by intelligence.They found that after controlling for educational attainment, the genetic effect declined by 42 percent.So far, sampling of extant and fossil taxa has been assumed to be either complete or uniformly at random, an assumption which is only valid for a minority of data sets.We therefore extend the FBD process to accommodate diversified sampling of extant taxa, which is standard practice in studies of higher-level taxa.Here, we take advantage of this and expand the analysis to include information about fossilization and sampling processes.Our work is based on the recently described fossilized birth–death (FBD) process, which has been used to model speciation, extinction, and fossilization rates that can vary over time in a piecewise manner.

Scientists at the Moffitt Cancer Center found in a study of breast cancer that cells closer to the center of a tumor are more attuned to using resources, while those at the outer edges specialize in cellular invasion that leads to tumor growth.

Many studies have found that people tend to marry others who are similar to them in education, social class, race and even body weight. [I Don't: 5 Myths About Marriage] The question, according to study leader and University of Colorado research associate Benjamin Domingue, was whether these assortative mating differences are visible at the genetic level. They compared the similarity of the DNA of married couples with the similarity of random, non-coupled individuals.

The researcher analyzed genetic data from 825 non-Hispanic white Americans who participated in the U. The results, mirrored in a follow-up study with data from the long-running Framingham Heart Study, revealed that married people have more similar DNA segments than random pairs of people.

"Interestingly, differences within a single population [tumor cells] are seen in biological invasions in nature," Dr.

Robert Gatenby, chair of the department of diagnostic imaging and interventional radiology at Moffitt Cancer Center, said in a press release.

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    Hogan is a twelve-time world champion: a six-time WWF World Heavyweight Champion/WWF Champion (with his last reign being as Undisputed WWF/WWE Champion) and a six-time WCW World Heavyweight Champion.