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Question

Cancer-causing genes are called:

A
oncogenes
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B
regulatory genes
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C
structural genes
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D
expressor genes
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Solution

The correct option is (A) oncogenes

Cancer-causing genes are called oncogenes.

Genes serve as functional units of heredity due to their DNA construction. The DNA that makes up a chromosome contains several genes. Every gene contains a unique set of instructions for coding proteins or performing a certain function. Genes serve the following purposes:

  • DNA and RNA operations are governed by genes.
  • Genes are made up of a distinct collection of instructions or functions. As an illustration, the “globin gene” instructs the haemoglobin synthesis, which helps to carry oxygen in blood circulation.
  • Enzymes are crucial for carrying out many chemical reactions and functions in the body. Enzymes are mostly proteins. Therefore, protein synthesis, primarily regulated by genes, is accountable for all bodily functions.

Oncogenes

Cancer-causing genes are called oncogenes. A gene that has the potential to cause cancer is known as an oncogene. These genes frequently exhibit mutations or are highly expressed in tumour cells. Activation of the proto-oncogenes under certain conditions could lead to the oncogenic/carcinogenic transformation of the cells.

Structural Genes

A structural gene is any gene that undergoes transcription and translation to produce proteins other than regulatory factors.

Expressor Genes

Gene expression is a process by which the information stored in a gene is used to produce proteins or other functional products (tRNA, rRNA, etc.). This is mediated by the process of transcription and translation.

Regulatory Genes

Genes that control the expression of one or more genes are called regulatory genes.

Final Answer

Option (A). Oncogenes

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