Point mutations are a large category of mutations that describe a change in single nucleotide of DNA, such that that nucleotide is switched for another nucleotide, or that nucleotide is deleted, or a single nucleotide is inserted into the DNA that causes that DNA to be different from the normal or wild type gene ...
A point mutation or substitution is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a DNA or RNA sequence of an organism's genome.
The urea molecules were not able to diffuse not through the 20 MWCO membrane because they were too large to fit through the. Pores. Glucose molecules were able to diffuse through the MWCO membrane , but albumin could not.