Uncategorized
- Math
Art of the Grid
The practice of laying a grid on top of a drawing, then painstakingly copying each line of the drawing to the corresponding cell of a blank grid seems old-fashioned in these days of pervasive photocopying and electronic image manipulation. Nonetheless, the underlying idea of transferring information from one grid to another has a long history […]
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19306
Your article ends with the claim that “a color-blind person and a noncarrier have no chance of having a color-blind child.” Yet as I recall from basic biology class, color blindness is considered a prime example of a sex-linked trait, which makes the above statement untrue. Carried on the X chromosome, the trait would manifest […]
- Health & Medicine
Gene mutation for color blindness found
Scientists have identified the gene that is mutated in people who have color blindness on the Pacific island of Pingelap, perhaps paving the way for genetic screening.
