The right answer is A.
The Hardy-Weinberg principle is a theory of population genetics, which postulates that within an (ideal) population, there is a balance of allelic and genotypic frequencies from one generation to the next.
For this equilibrium to be achieved, there must be no evolutionary forces such as mutations, migration, genetic derivatives, natural selection, the founder effect ...
Answer:
Cell membranes are composed primarily of fatty-acid-based lipids and proteins. Membrane lipids are principally of two types, phospholipids and sterols (generally cholesterol).
It is the Watt per square meter, or W/m2.