H421 adhesive-lined polyolefin heat shrinkable tube has a 4:1 shrink ratio, meaning when it is freely recovered, the heat shrinkable sleeving will shrink down to 25% of its original diameter.his versatile, exceptionally durable H421 adhesive-lined semi-rigid polyolefin heat shrinkable tubing offers an outstanding, highly reliable heat shrink tube solution perfect for use in a vast assortment of electrical cable and wire protection applications.
Allele. Definition. noun, plural: alleles. (genetics). One member of a pair (or any of the series) of genes occupying a specific spot on a chromosome (called locus) that controls the same trait. Supplement. For example, a pair of alleles controlling the same trait, i.e. eye color: one allele codes for blue eyes, another allele for brown eyes. In humans, simple traits such as eye color may be caused by the interaction of only one pair of alleles.
A gene is a stretch of DNA or RNA that determines a certain trait. Genes mutate and can take two or more alternative forms; an allele is one of these forms of a gene.For example, the gene for eye color has several variations (alleles) such as an allele for blue eye color or an allele for brown eyes.An allele is found at a fixed spot on a chromosome. Chromosomes occur in pairs so organisms have two alleles for each gene â one allele in each chromosome in the pair.n allele is found at a fixed spot on a chromosome. Chromosomes occur in pairs so organisms have two alleles for each gene â one allele in each chromosome in the pair.