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Full-Text Articles in Life Sciences
Behavioural Assessment Of Visual Acuity In Bumblebees (Bombus Impatiens), Robert Gegear, Todd Macuda, Terence Laverty, Brian Timney
Behavioural Assessment Of Visual Acuity In Bumblebees (Bombus Impatiens), Robert Gegear, Todd Macuda, Terence Laverty, Brian Timney
Robert J. Gegear
measure resolution acuity in bumblebees (Bombus impatiens). Bees were required to discriminate between horizontal and vertical gratings in a Y-maze apparatus. The gratings had a mean luminance of 9 cd m−2 and a Michelson contrast of 84 %. For different bees, either the horizontal or vertical grating was rewarded. Rewarded gratings were associated with a sucrose and water solution (30 % sucrose by volume) and unrewarded gratings with plain water. Acuity estimates were established at several different viewing distances over several sessions using a method of constant stimuli. Visual acuity functions were generated from the performance data, and acuity thresholds …
Through The Lens Of The Sequence, Ellen Wright Clayton
Through The Lens Of The Sequence, Ellen Wright Clayton
Vanderbilt Law School Faculty Publications
The completion of the rough draft of the human genome is a scientific feat worthy of celebration. But the media attention that has been devoted to the Human Genome Project demonstrates that most people are not as interested in what the sequence is as in what it means for individuals and for society, for good or for ill. My purpose in writing this essay is to discuss how the project was conducted here in the United States, and some of the implications of knowing the sequence (or more aptly, a sequence).