The initiation of the activity of the inactive enzyme MAP kinase by phosphorylation by a MAPKK [goid 187] [pmid 9013573] [evidence IDA]; The process by which the anatomical structures of branches are generated and organized. Morphogenesis pertains to the creation of form. A branch is a division or offshoot from a main stem. Examples in animals would include blood vessels, nerves, lymphatics and other endothelial or epithelial tubes [goid 1763] [pmid 10070255] [evidence TAS]; The series of molecular signals generated as a consequence of an epidermal growth factor receptor binding to one of its physiological ligands [goid 7173] [pmid 8006041] [evidence IDA]; The process whose specific outcome is the progression of the heart over time, from its formation to the mature structure. The heart is a hollow, muscular organ, which, by contracting rhythmically, keeps up the circulation of the blood [goid 7507] [pmid 9576836] [evidence IDA]; Any process that activates or increases the rate or extent of cell proliferation [goid 8284] [pmid 11857442] [evidence TAS]; The specification of the anterior/posterior axis of the embryo by the products of genes expressed maternally and genes expressed in the zygote [goid 8595] [evidence ISS]; The process whose specific outcome is the progression of an embryo from its formation until the end of its embryonic life stage. The end of the embryonic stage is organism-specific. For example, for mammals, the process would begin with zygote formation and end with birth. For insects, the process would begin at zygote formation and end with larval hatching. For plant zygotic embryos, this would be from zygote formation to the end of seed dormancy. For plant vegetative embryos, this would be from the initial determination of the cell or group of cells to form an embryo until the point when the embryo becomes independent of the parent plant [goid 9790] [pmid 11857442] [evidence TAS]; Any process that modulates the frequency, rate or extent of signal transduction [goid 9966] [pmid 12649175] [evidence IDA]; The posttranslational phosphorylation of peptidyl-serine to form peptidyl-O-phospho-L-serine [goid 18105] [pmid 10493495] [evidence IDA]; The process whereby relatively unspecialized cells, e.g. embryonic or regenerative cells, acquire specialized structural and/or functional features that characterize the cells, tissues, or organs of the mature organism or some other relatively stable phase of the organism's life history. Differentiation includes the processes involved in commitment of a cell to a specific fate [goid 30154] [pmid 11857442] [evidence TAS]; Any process that activates or increases the frequency, rate or extent of cell migration [goid 30335] [pmid 12649175] [evidence IDA]; The process whose specific outcome is the progression of the mammary gland over time, from its formation to the mature structure. The mammary gland is a large compound sebaceous gland that in female mammals is modified to secrete milk [goid 30879] [pmid 11857442] [evidence TAS]; Any process that stops, prevents or reduces the frequency, rate or extent of cell death by apoptosis [goid 43066] [pmid 10493495] [evidence IDA]; Any process that activates or increases the frequency, rate or extent of the phosphorylation of peptidyl-tyrosine [goid 50731] [pmid 10493495] [evidence IDA]