Polygenic inheritance. Definition. noun. A non-Mendelian form of inheritance in which a particular trait is produced by the interaction of many genes.Supplement.Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many genes in contrast to monogenic inheritance wherein the trait results from the expression of one gene (or one gene pair). non-Mendelian form of inheritance in which a particular trait is produced by the interaction of many genes.
Celtic Thunder, the singing group from Ireland, are a composition of six male soloists who perform both solo and ensemble numbers.
It makes an uneven, jumbled sound, because the lightning that created it is jagged and uneven (see image at right) Thunder also sounds different depending on how far away you are from the lightning, what type of discharge it is (intracloud, cloud-to-ground), and which part of the lightning you hear first. You see a bright flash, followed seconds later by a soft, crackling sound, then a loud, startling crash.