Which of the following might affect gene expression in a complex organism? A- the cell’s adjacency to other kinds of cells
B- the number of chromosomes being copied
C- the amount of time a cell takes to replicate DNA
D- the ability to reverse terminal differentiation

A- the cell’s adjacency to other kinds of cells

Explanation:

Different factors including small molecules and/or secreted proteins can trigger signaling pathways that affect gene expression in nearby cells. For example, peptide hormones that are synthesized in specific cells bind to receptors on effector cells and thus modulate its gene expression through the activation of signaling pathways. Moreover, regulatory non-coding RNAs such as microRNAs (miRNAs) synthesized by specific cells are released in exosomes and other microvesicles in order to affect gene expression in nearby cells.

its A I had the same quiz

Explanation:

the correct answer is (

explanation:

they deliver oxygen to the blood