Open the Edit menu at the top of the screen and choose Select All to highlight all of the songs in your iTunes library. Right-click on any of the highlighted items and select Reset Play Count from the contextual menu that appears. This will delete the play count data for all of the songs in your library.Plug your iPod into your computer using an iPod USB cable.ight-click on any of the highlighted items and select Reset Play Count from the contextual menu that appears. This will delete the play count data for all of the songs in your library. Plug your iPod into your computer using an iPod USB cable.
An allele is a version of a gene. For example, in fruitflies there is a gene which determines eye colour: one allele gives red eyes, and another gives white eyes; it is the same *gene*, just different versions of that gene. A monogenic trait is one which is encoded by a single gene.e.g. - cystic fibrosis in humans.There is a single gene which determines this trait: the wild-type allele is healthy, while the disease allele gives you cystic fibrosis.or example, in fruitflies there is a gene which determines eye colour: one allele gives red eyes, and another gives white eyes; it is the same *gene*, just different versions of that gene. A monogenic trait is one which is encoded by a single gene. e.g. - cystic fibrosis in humans.
A single gene trait is controlled by a single gene. Polygenic traits are controlled by two or more than two genes on different chromosomes. These genes are described as polygenes. Examples of human polygenic inheritance are height, skin color and weight.