How can many cell types with essentially the same inherited genome develop different functions?
Answer & explanation
They regulate the expression of different genes and the amounts of their products.
Gene regulation changes which RNAs and proteins are available and in what amounts. Different combinations support different cellular activities. Specialization therefore does not require a wholly different genetic code for each cell type.
Guyton and Hall Textbook of Medical Physiology E-Book (Guyton Physiology)
Chapter 3 · Genetic Control of Protein Synthesis, Cell Function, and Cell Reproduction
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Generally accurate according to an AI review. Sources and this book association have not been verified.