The repair of single strand breaks in DNA. Repair of such breaks is mediated by the same enzyme systems as are used in base excision repair [goid 12] [pmid 8798671] [evidence IDA]; The process whose specific outcome is the progression of the embryo in the uterus over time, from formation of the zygote in the oviduct, to birth [goid 1701] [evidence ISS]; The process whereby a precursor cell type acquires the specialized features of a pro-B cell. Pro-B cells are the earliest stage of the B cell lineage and undergo heavy chain D and J gene rearrangements, although they are not fully committed [goid 2328] [evidence ISS]; The process whereby new strands of DNA are synthesized. The template for replication can either be an existing DNA molecule or RNA [goid 6260] [evidence IEA]; Repair of the gap in the DNA helix by DNA polymerase and DNA ligase after the portion of the strand containing the lesion has been removed by pyrimidine-dimer repair enzymes [goid 6297] [pmid 12517771] [evidence IDA]; The repair of a double-strand break in DNA in which the two broken ends are rejoined with little or no sequence complementarity. Information at the DNA ends may be lost due to the modification of broken DNA ends [goid 6303] [pmid 12517771] [evidence IDA]; The repair of a double-strand break in DNA in which the two broken ends are rejoined with little or no sequence complementarity. Information at the DNA ends may be lost due to the modification of broken DNA ends [goid 6303] [pmid 9809069] [evidence IMP]; The progression of biochemical and morphological phases and events that occur in a cell during successive cell replication or nuclear replication events. Canonically, the cell cycle comprises the replication and segregation of genetic material followed by the division of the cell, but in endocycles or syncytial cells nuclear replication or nuclear division may not be followed by cell division [goid 7049] [evidence IEA]; 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, spinal cord and spinal nerves. In those invertebrates with a central nervous system it typically consists of a brain, cerebral ganglia and a nerve cord [goid 7417] [evidence ISS]; The multiplication or reproduction of cells, resulting in the expansion of a cell population [goid 8283] [evidence ISS]; A change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of X-ray radiation. An X-ray is a form of electromagnetic radiation with a wavelength in the range of 10 nanometers to 100 picometers (corresponding to frequencies in the range 30 PHz to 3 EHz) [goid 10165] [pmid 9809069] [evidence IMP]; A change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a gamma radiation stimulus. Gamma radiation is a form of electromagnetic radiation (EMR) or light emission of a specific frequency produced from sub-atomic particle interaction, such as electron-positron annihilation and radioactive decay. Gamma rays are generally characterized as EMR having the highest frequency and energy, and also the shortest wavelength, within the electromagnetic radiation spectrum [goid 10332] [evidence ISS]; The molecular events that lead to the integration of a viral genome into the host genome [goid 19047] [pmid 16291214] [evidence EXP]; The set of processes involved in the start of virus infection of cells [goid 19059] [pmid 12091904] [evidence EXP]; The process whereby a precursor cell type acquires the specialized features of a T cell via a differentiation pathway dependent upon transit through the thymus [goid 33077] [evidence ISS]; The process by which immunoglobulin heavy chain V, D, and J gene segments are recombined within a single locus utilizing the conserved heptamer and nonomer recombination signal sequences (RSS). For immunoglobulin light chains the same process is used to join V and J gene segments directly [goid 33152] [evidence IEA]; The process by which T cell receptor V, D, and J, or V and J gene segments, depending on the specific locus, are recombined within a single locus utilizing the conserved heptamer and nonomer recombination signal sequences (RSS) [goid 33153] [evidence ISS]; The process by which an organism retains a population of somatic stem cells, undifferentiated cells in the embryo or adult which can undergo unlimited division and give rise to cell types of the body other than those of the germ-line [goid 35019] [evidence ISS]; Any process that stops, prevents or reduces the frequency, rate or extent of cell death by apoptosis in neurons [goid 43524] [evidence ISS]; The switching of activated B cells from IgM biosynthesis to biosynthesis of other isotypes of immunoglobulin, accomplished through a recombination process involving an intrachromosomal deletion involving switch regions that reside 5' of each constant region gene segment in the immunoglobulin heavy chain locus [goid 45190] [evidence ISS]; Any process that activates or increases the frequency, rate or extent of multiplication or reproduction of fibroblast cells [goid 48146] [evidence ISS]; Any process that activates or increases the frequency, rate or extent of neurogenesis, the origin and formation of neurons [goid 50769] [evidence ISS]; The re-formation of a broken phosphodiester bond in the DNA backbone, carried out by DNA ligase, as occurs during DNA recombination [goid 51102] [evidence ISS]; The re-formation of a broken phosphodiester bond in the DNA backbone, carried out by DNA ligase, as occurs during DNA repair [goid 51103] [evidence ISS]; The re-formation of a broken phosphodiester bond in the DNA backbone, carried out by DNA ligase, as occurs during DNA repair [goid 51103] [pmid 12517771] [evidence IDA]; A process that is carried out at the cellular level that results in the formation, arrangement of constituent parts, or disassembly of chromosomes, structures composed of a very long molecule of DNA and associated proteins that carries hereditary information [goid 51276] [evidence ISS]; The process resulting in the physical partitioning and separation of a cell into daughter cells [goid 51301] [evidence IEA]