The process whose specific outcome is the progression of the central nervous system over time, from its formation to the mature structure. The central nervous system is the core nervous system that serves an integrating and coordinating function. In vertebrates it consists of the brain and spinal cord. In those invertebrates with a central nervous system it typically consists of a brain, cerebral ganglia and a nerve cord.

Any process that initiates the activity of an inactive GTPase through the replacement of GDP by GTP.

The process in which the R7 photoreceptor commits to its cell fate. The R7 receptor contributes the central part of the rhabdomere in the apical parts of the ommatidium.

Assembly of actin filaments by the addition of actin monomers to a filament.

Any process that activates or increases the frequency, rate or extent of the sevenless signaling pathway.

Any process involved in the controlled self-propelled movement of a cell that results in translocation of the cell from one place to another.

Any process that activates or increases the frequency, rate or extent of signal transduction mediated by the ERK1 and ERK2 cascade.

Any process during chimeric sorocarp development that increases by which a cell increases the number of spore cells sharing its genotype at the expense of cells of other genotypes.

The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

The region of a cell that lies just beneath the plasma membrane and often, but not always, contains a network of actin filaments and associated proteins.

The area of a motile cell closest to the direction of movement.