Question

Which recent discovery led to a new understanding of how genetic mutations increase the risk of cancer?

double helix structure of DNA
BRCA1 and BRCA2 genes
nucleic acid monomers
chemical composition of proteins

Answer 1

B

Step-by-step explanation:

BRCA1 and BRCA2 genes

Answer 2

A good answer is ‘BRCA1 and BRCA2 genes’. These two genes were discovered by Marie-Clare King in the 1970s and offered a major contribution to our understanding of cancer, particularly breast cancer, which was thought to be caused by viruses at the time.