When a cell in a fully developed adult vertebrate synthesizes a protein, does it matter whether the mRNA transcribes the maternal or the paternal allele that codes for the protein? There are small differences in the base pair sequences of the two alleles. These differences would make small differences in the amino acid sequence of the resulting protein. Does the cell need to select which of the two alleles is to be transcribed, or are the differences too small to matter?
Del