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.
Diploid organisms have one copy of each gene (and, therefore, one allele) on each chromosome. If both alleles are the same, they and the organism are homozygous with respect to that gene. If the alleles are different, they and the organism are heterozygous with respect to that gene.The word allele is a short form of allelomorph (other form), which was used in the early days of genetics to describe variant forms of a gene detected as different phenotypes.he frequency of alleles in a diploid population can be used to predict the frequencies of the corresponding genotypes (see Hardy-Weinberg principle). For a simple model, with two alleles: where p is the frequency of one allele and q is the frequency of the alternative allele, which necessarily sum to unity.