Question

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in humans, nerve cells and liver cells have the same set of dna, yet their functions are different. what allows the functions of these cells to vary, despite having the same dna?
○ variation in chromosome numbers
○ variation in the process of cell division
○ variation in dna expression and gene activity
○ variation in the amount of cytoplasm

Explanation:

All somatic human cells share identical DNA. Functional differences between cell types arise from which genes are turned on or off, a process called gene expression. This regulates which proteins are produced, defining cell function. Chromosome number, cell division processes, and cytoplasm amount do not drive this specialized function.

Answer:

variation in DNA expression and gene activity