The Second Intron Is Essential for the Transcriptional Control of the Gene in Leaves.

The gene is a major regulator of trichome patterning in The regulatory regions important for the trichome-specific expression of have not been characterized yet. In this study, we used a combination of marker and rescue constructs to determine the relevant promoter regions. We demonstrate that a 1 kb 5' region combined with the second intron is sufficient to rescue the trichome mutant phenotype of mutants.

The U.S. Food and Drug Administration should solidify the legal basis for its authority over reproductive cloning.

The promise and potential of stem cell research is apparent. However, ethical questions still linger. There is as yet no consensus in the U.

Marker removal in staphylococci via Cre recombinase and different lox sites.

Allelic replacement in staphylococci is frequently aided by antibiotic resistance markers that replace the gene(s) of interest. In multiply modified strains, the number of mutated genes usually correlates with the number of selection markers in the strain's chromosome. Site-specific recombination systems are capable of eliminating such markers, if they are flanked by recombinase recognition sites.

The use of background and ability profiles to predict college student outcomes.

To determine whether profiles of predictor variables provide incremental prediction of college student outcomes, the authors 1st applied an empirical clustering method to profiles based on the scores of 2,771 entering college students on a battery of biographical data and situational judgment measures, along with SAT and American College Test scores and high school grade point average, which resulted in 5 student groups. Performance of the students in these clusters was meaningfully different on a set of external variables, including college grade point average, self-rated performance, class absenteeism, organizational citizenship behavior, intent to quit their university, and satisfaction with college. The 14 variables in the profile were all significantly correlated with 1 or more of the outcome measures; however, nonlinear prediction of these outcomes on the basis of cluster membership did not add incrementally to a linear-regression-based combination of these 14 variables as predictors.