Tin is a malleable silvery-white metal which takes a high polish. It possesses a highly crystalline structure and is moderately ductile. When a bar of tin is bent, the crystals break, producing a characteristic 'tin cry'. Two or three allotropic forms of tin exist. Gray or a tin has a cubic structure. Upon warming, at 13.2Â°C gray tin changes to white or b tin, which has a tetragonal structure. This transition from the a to the b form is termed the tin pest. A g form may exist between 161Â°C and the melting point.
The particular order of the bases arranged along the sugar-phosphate backbone is called the DNA sequence; the sequence specifies the exact genetic instructions required to create a particular organism with its own unique traits. Each strand of the DNA molecule is held together at its base by a weak bond.
Best Answer: The term ligation in molecular biology basically means the joining of two molecules (usually nucleotides). A ligase is an enzyme that facilitates this process. In DNA replication, the purpose of DNA ligase is to ligate the nucleotides in the lagging strand to one another.ubmit. Â· just now. Report Abuse. Binds strands of DNA together, of ligates them. During replication when DNA is sythesizing they unbind at points. DNA ligase is a particular type of ligase that can link together DNA strands that have double-strand breaks (a break in both complementary strands of DNA).