Category: H

Developed in America in the mid-1960’s, these are com varieties possessing the floury-2 gene. The floury-2 gene causes such com to contain slightly higher levels of methionine than traditional No. 2 yellow com. High-methionine com is particularly useful for feeding of poultry, since traditional No. 2 yellow com does not contain enough methionine for optimal…

Developed in America in the mid-1960’s, these are com varieties possessing the opague-2 gene. The opague-2 gene causes such com to contain 0.30-0.55% lysine (i.e., 50-80% more than traditional No. 2 yellow com). High-lysine com is particularly useful for feeding of swine, since traditional No. 2 yellow com does not contain enough lysine for optimal…

A research process in which hydrofluoric acid is used to sequentially remove side-chain protective groups from peptide chains. Also used to remove the resin support from peptides that have been prepared via solid phase peptide synthesis. The HF cleavage reaction is a temperature-dependent process.  

A solvent that is widely utilized to dissolve plant DNA samples (e.g., when a scientist wants to sequence that sample of plant DNA). CTAB solvent helps the scientist to separate out contaminants that are commonly present in samples from plant tissues (i.e., polysaccharides, quinones, etc.) because DNA molecules are much more soluble in CTAB than…

A sequence of amino acids in two or more proteins that are not identical to each other.  

Those proteins produced by an organism that is not the wild type source of those proteins. For example, bacteria have been genetically engineered to produce human growth hormone and bovine (i.e., cow) somatotropin.  

A fused cell containing nuclei of different species.  

One that consists of two or more phases such as liquid-vapor, or liquid-vapor-solid.  

A chemical reaction in which the reactants are of different phases; for example, gas with liquid, liquid with solid, or a solid catalyst with liquid or gaseous reactants.  

A DNA molecule, the two strands of which come from different individuals so that there may be some base pairs or blocks of base pairs that do not match. Can arise from mutation, recombination, or by annealing DNA single strands in vitro.