A proto-oncogene is an allele of a gene that produces a protein with normal activity. True False<\/p>\n\n\n\n
The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n Answer:<\/strong> True<\/p>\n\n\n\n Explanation:<\/strong><\/p>\n\n\n\n A proto-oncogene<\/strong> is a normal gene that codes for proteins involved in cell growth, division, and differentiation. These proteins play essential roles in regulating normal cellular functions such as signaling pathways that control when a cell should divide or when it should die. Proto-oncogenes produce proteins with normal activity<\/strong> that help maintain healthy cell function.<\/p>\n\n\n\n However, when a proto-oncogene undergoes mutations or becomes abnormally activated\u2014due to genetic changes like point mutations, gene amplification, or chromosomal rearrangements\u2014it can become an oncogene<\/strong>. Oncogenes produce altered proteins that have increased or unregulated activity, which can lead to excessive cell division and potentially contribute to the development of cancer.<\/p>\n\n\n\n In simpler terms:<\/p>\n\n\n\n For example, the proto-oncogene RAS<\/strong> normally produces a protein that acts as a molecular switch in cell signaling pathways controlling growth. When mutated, RAS becomes an oncogene that continuously signals the cell to divide, contributing to cancer development.<\/p>\n\n\n\n In summary, the statement is true<\/strong> because a proto-oncogene is indeed an allele of a gene that produces a protein with normal activity. It only becomes dangerous when it mutates into an oncogene.<\/p>\n\n\n\n
\n\n\n\n\n