Cell Differentiation<span> and Tissue. Within multicellular organisms, tissues are organized communities of </span>cells<span>that </span>work together<span> to carry out a specific function. The exact role of a tissue in an organism depends on what types of </span>cells<span> it contains.</span>
The expression of the alleles is independent of the organism's sex; both males and females express the allele.
Bacteria cells, I believe so.
I believe it is organ level