Differentiation of organs and tissues in a developing organism, is associated with:
(1) developmental mutations
(2) differential expression of genes
(3) lethal mutations
(4) deletion of gens
(2) Differentiation of organs and tissues in a developing organism, is associated with differential expression of genes. In regulation of gene expression the chromosomal proteins play important role. The chromosomal proteins are of two types histones and non-histones. The regulation of gene expression involves an interaction between histones and non-histones.