How can two cells of a complex multicellular organism have the same genome, but markedly different structures and functions?
A)During differentiation, as cells become specialized, they lose portions of their genome that are no longer needed.
B)Different genes are expressed in different cells.
C)Part of the process of differentiation of cells is to create mutations in the genome.
D)Once differentiation begins, the genome no longer controls cellular functions.

Question

Quizplus · Accepted Answer

Different cells within a complex multicellular organism may have the same genome, but their genes are expressed differently. This means that different cells have different sets of proteins that allow them to carry out different functions and develop different structures. Gene expression is regulated by a complex array of transcription factors and signaling pathways that are determined by the cell's environment and developmental stage. This allows cells to differentiate and develop specialized structures and functions while retaining the same genome.

How Can Two Cells of a Complex Multicellular Organism Have