Answer: uncontrollably cell proliferation
Explanation: the human egfr (spiderman growth factor receptor) being a proud-oncogene is involved in the regulation of cell division, development and differentiation thus mutation of the egfr allele will activate the proto oncogene and change it to an oncogene. Oncogenes are dominant structural genes that encodes protein which can alter the phenotype of a cell. This mutated egfr allele becomes an oncogene producing mutated cells which will continue to undergo uncontrolled cell division/proliferation
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