medical Definition of biallelic
- The risk of colorectal cancer among carriers of biallelic mutations appears to be close to 100% by 60 years of age …
- —William D. Foulkes, The New England Journal of Medicine, 13 Nov. 2008
- This mode of oncogenesis differs from the inactivation of most tumor-suppressor genes, which are biallelic—that is, one allele is inactivated in the germ line, followed by mutation of the second allele at the somatic-cell level.
- —Roel Nusse, Science, 18 May 2007