"The process whose specific outcome is the progression of the skeleton over time, from its formation to the mature structure. The skeleton is the bony framework of the body in vertebrates (endoskeleton) or the hard outer envelope of insects (exoskeleton or dermoskeleton) [goid 1501] [evidence IEA]; The process whose specific outcome is the progression of the skeleton over time, from its formation to the mature structure. The skeleton is the bony framework of the body in vertebrates (endoskeleton) or the hard outer envelope of insects (exoskeleton or dermoskeleton) [goid 1501] [pmid 9671740] [evidence TAS]; The formation of mesodermal clusters that are arranged segmentally along the anterior posterior axis of an embryo [goid 1756] [evidence IEA]; Any process that modulates the frequency, rate or extent of DNA-dependent transcription [goid 6355] [evidence IEA]; The synthesis of RNA from a DNA template by RNA polymerase II (Pol II), originating at a Pol II-specific promoter. Includes transcription of messenger RNA (mRNA) and certain small nuclear RNAs (snRNAs) [goid 6366] [pmid 1358810] [evidence TAS]; Any developmental process that results in the creation of defined areas or spaces within an organism to which cells respond and eventually are instructed to differentiate [goid 7389] [evidence IEA]; The process whereby a relatively unspecialized T cell acquires specialized features of a mature CD4-positive, alpha-beta T cell [goid 43367] [evidence IEA]; The process whereby a relatively unspecialized T cell acquires specialized features of a mature CD8-positive, alpha-beta T cell [goid 43374] [evidence IEA]; The process whose specific outcome is the progression of the thymus over time, from its formation to the mature structure. The thymus is a symmetric bi-lobed organ involved primarily in the differentiation of immature to mature T cells, with unique vascular, nervous, epithelial, and lymphoid cell components [goid 48538] [evidence IEA]; The process whose specific outcome is the progression of the parathyroid gland over time, from its formation to the mature structure. The parathyroid gland is an organ specialised for secretion of parathyroid hormone [goid 60017] [evidence IEA]"