A broad survey of DNA sequence data simulation tools

In silico DNA sequence generation is a powerful technology to evaluate and validate bioinformatics tools, and accordingly more than 35 DNA sequence simulation tools have been developed. With such a diverse array of tools to choose from, an important question is: Which tool should be used for a desired outcome? This question is largely unanswered as documentation for many of these DNA simulation tools is sparse. To address this, we performed a review of DNA sequence simulation tools developed to date and evaluated 20 state-of-art DNA sequence simulation tools on their ability to produce accurate reads based on their implemented sequence error model. We provide a succinct description of each tool and suggest which tool is most appropriate for the given different scenarios. Given the multitude of similar yet non-identical tools, researchers can use this review as a guide to inform their choice of DNA sequence simulation tool. This paves the way towards assessing existing tools in a unified framework, as well as enabling different simulation scenario analysis within the same framework.

A comprehensive survey of models for dissecting local ancestry deconvolution in human genome

Over the past decade, studies of admixed populations have increasingly gained interest in both medical and population genetics. These studies have so far shed light on the patterns of genetic variation throughout modern human evolution and have improved our understanding of the demographics and adaptive processes of human populations. To date, there exist about 20 methods or tools to deconvolve local ancestry. These methods have merits and drawbacks in estimating local ancestry in multiway admixed populations. In this article, we survey existing ancestry deconvolution methods, with special emphasis on multiway admixture, and compare these methods based on simulation results reported by different studies, computational approaches used, including mathematical and statistical models, and biological challenges related to each method. This should orient users on the choice of an appropriate method or tool for given population admixture characteristics and update researchers on current advances, challenges and opportunities behind existing ancestry deconvolution methods.

Black cosmetologists promoting health program: pilot study outcomes

BACKGROUND

African Americans suffer a disproportionate burden of illness and premature mortality.

METHODS

A health education program delivered via cosmetologists was pilot tested as a supplement to other programs seeking to reach this community with information designed to remedy this inequality. Eight cosmetologists were randomized to either an active or a passive educational intervention arm, with the active arm (experimental arm) focused on breast cancer early detection.

RESULTS

Both cosmetologists and clients found this an acceptable intervention. Nearly all women in the study demonstrated that they had heard the mainstream messages about the value of breast cancer early detection, but a considerable proportion appeared not to realize breast cancer's high level of morbidity and mortality within their own community.

CONCLUSION

The results suggest this approach is worthy of further evaluation.