X-ray radiation causes DNA breaks and mutations. Experiment Identifying the defect by adding nutrients. Conclusions Added nutrients such as amino acids or vitamins could restore growth of auxotrophs. Mutations in DNA cause loss of genes specifying enzymes. Ingram further confirmed this ideas from studies of human- sickle cell anemia.
Genetic information is stored in a linear message on nucleic acids.
A gene determine the sequence of amino acids in proteins. RNA viruses make numerous mistakes in replicating genetic information. The structural and sometimes catalytic molecule of the ribosome. Return to DNA, RNA, Protein synthesis.