Multiple choice

Which of the following statements is/are correct?

  1. BRCA 1 (breast cancer 1, early onset) is a human gene that belongs to a class of genes known as tumour suppressors, which maintains genomic integrity to prevent uncontrolled proliferation.

  2. The mutifactorial BRCA 1 protein product is involved in DNA damage repair, ubiquitination, transcriptional regulation as well as other functions.

  3. Variations in the gene have been implicated in a number of hereditary cancers, namely breast, ovarian and prostate.

  4. All are correct

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

BRCA1 is indeed a tumor suppressor gene that maintains genomic integrity by preventing uncontrolled cell proliferation. The multifunctional BRCA1 protein participates in crucial cellular processes including DNA damage repair, ubiquitination, and transcriptional regulation. Mutations in this gene are well-established risk factors for hereditary breast, ovarian, and prostate cancers, making all three statements factually correct.