Here's why:
* Cell Differentiation: This is the process where initially identical cells develop into specialized cells with distinct structures and functions. This specialization arises due to the differential expression of genes within the cells.
* Tissue Formation: Groups of similar cells that work together to perform a specific function form tissues. For example, muscle tissue is composed of muscle cells that contract, while nervous tissue is made of neurons that transmit signals.
* Organ Formation: Different tissues then organize and interact to create organs, which are complex structures that carry out specific functions. For instance, the heart is an organ made of muscle tissue, connective tissue, and nervous tissue that works to pump blood.
Therefore, cell differentiation is the fundamental process that drives the development of specialized tissues and organs in multicellular organisms.
