A mutation of a tumour suppressor gene can result in the formation of a tumour. Explain how. Not all mutations to the gene result in a tumour. Explain how.

To answer this two-part question students must be able to understand two concepts: what a gene can do; and what constitutes a gene.

For the first part, a mutation in the genetic code of the tumour suppresor gene can inactive the gene. Inactivation of the gene will prevent the protein produced from slowing down cell division. An increased rate in cell division can become too fast for the body and cause a tumour.
If a mutation does not cause a tumour then this can be attributed to the genetic code being degenerate. (An alternative answer could be that the mutation is within an intron or an untranslated region of the gene).

LY
Answered by Luke Y. Biology tutor

7498 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe the stages in viral replication


what is the advantage of having a large surface area?


Explain the importance of dialysis fluid containing no urea and normal plasma levels of salt, glucose and minerals. [4]


What is meant by the "fluid-mosaic" model of cell membrane structure?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning