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?
How To Calculate A Membrane Potential. 1  R is the universal gas constant (8.314 J.K-1.mol-1). 2  T is the temperature in Kelvin (Â°K = Â°C + 273.15). 3  z is the ionic charge for an ion. For example, z is +1 for K+, +2 for Mg2+, -1 for F-, -1 for Cl-, etc. Remember, z does not have a unit. 4  F is the Faraday's constant (96485 C.mol-1).