Answer : It very much essential and plays very miportant role in the regulation of the cell cycle, differentiation, growth and cell senescence, all of which are critical to normal development. A class of human genetic syndromes has emerged that are caused by germline mutations in genes which encode components of the Ras/mitogen activated protein kinase (MAPK) pathway. This pathway plays an essential role in the control of the cell cycle and differentiation, therefore its dysregulation has profound developmental consequences. These “RASopathies” exhibit unique phenotypic features, however, many share characteristic overlapping features including craniofacial dysmorphology, cardiac, cutaneous malformations, musculoskeletal and ocular abnormalities, varying degrees of neurocognitive impairment and in some syndromes, an increased risk of developing cancer.Yes it act as second messenger for the ccell cycyle to go on. This RASopathy plays a very important role in the developement of T cells Solution Answer : It very much essential and plays very miportant role in the regulation of the cell cycle, differentiation, growth and cell senescence, all of which are critical to normal development. A class of human genetic syndromes has emerged that are caused by germline mutations in genes which encode components of the Ras/mitogen activated protein kinase (MAPK) pathway. This pathway plays an essential role in the control of the cell cycle and differentiation, therefore its dysregulation has profound developmental consequences. These “RASopathies” exhibit unique phenotypic features, however, many share characteristic overlapping features including craniofacial dysmorphology, cardiac, cutaneous malformations, musculoskeletal and ocular abnormalities, varying degrees of neurocognitive impairment and in some syndromes, an increased risk of developing cancer.Yes it act as second messenger for the ccell cycyle to go on. This RASopathy plays a very important role in the developement of T cells.