Upsampling adds more pixels/dots per inch (dpi), but creates blurry images, ugly blocks of color, and high contrast in images. The only way resolution can be improved is by decreasing the image size, or by recapturing the image at a higher quality setting.
Postcrossing is an online project that allows its members to send and receive postcards from all over the world.
Crossing Over. Genetic recombination that involves crossing over occurs during prophase I of meiosis in sex cell production. The duplicated pairs of chromosomes (sister chromatids) donated from each parent line up closely together forming what is called a tetrad. A tetrad is composed of four chromatids.