Strain - A genetic variant or specific subtype of a microorganism, such as a virus or bacteria.⏎
Yeast - A broad group of microscopic fungi that includes harmless forms of yeast used in baking and alcoholic fermentation as well as pathogenic species that can cause disease. ⏎
Sperm Cell - The male gamete, or sex cell, which carries the hereditary material of the male parent and unites with the female egg cell during sexual reproduction.⏎
RNA - Short for ribonucleic acid, RNA is a molecule with long strands of nucleic acids containing a nitrogenous base, a ribose sugar, and a phosphate. RNA is responsible for controlling a number of chemical activities, including protein synthesis, within cells.⏎