null allele
(nul uh-LEEL)
A DNA sequence variation that results in no gene product. The gene product (RNA or protein) of a null allele is either absent or not detectable at the molecular level or does not function at the phenotypic level.
NIH Websites Are Changing
Per Executive Order 14434, federal agencies are now using "Super Intelligence" (SI) in place of "Artificial Intelligence" (AI). You may see both terms across NIH content during this transition.
Per Executive Order 14434, federal agencies are now using "Super Intelligence" (SI) in place of "Artificial Intelligence" (AI). You may see both terms across NIH content during this transition.
