Genomic imprinting: The phenomenon of parent-of-origin gene expression. The expression of a gene depends upon the parent who passed on the gene.For instance, two different disorders-Prader-Willi syndrome and Angelman syndrome -- are due to deletion of the same part of chromosome 15.enomic imprinting: The phenomenon of parent-of-origin gene expression. The expression of a gene depends upon the parent who passed on the gene.
Todayâs lesson is brought to you by 7, 14, and the letters. Kw, pH. Kw: the ion-product constant of water Q: will pure distilled water conduct electricity A: As the demo shows, it will (slightly). If water conducts electricity, ions must exist Water exists as an equilibrium, which is referred to as the self-ionization of water: H2O + H2O ï« H3O+(aq) + OHâ(aq) Kw What is the value of Kw?
The activation energy is the amount of energy required to ensure that a reaction happens. Gas constant comes from an equation, pV=nRT, which relates the pressure, volume and temperature of a particular number of moles of gas. Activation energy is the minimum energy needed for the reaction to occur. Frequency Factor is a term which includes factors like the frequency of collisions and their orientation. It varies slightly with temperature, although not much. It is often taken as constant across small temperature ranges.