<span>It was the culmination of research in the 1930s and early 1940s at the Rockefeller Institute for Medical Research to purify and characterize the "transforming principle" responsible for the transformation phenomenon first described in Griffith's experiment of 1928: killed Streptococcus pneumoniae of the virulent strain type III-S, when injected along with living but non-virulent type II-R pneumococci, resulted in a deadly infection of type III-S pneumococci.</span>
The growth of plants and formation of land mammals characterized the paleozoic era.
Answer:
spherical (coccus), rodlike (bacillus), or curved (vibrio, spirillum, or spirochete).
Answer:
express different genes
Explanation:
cells of a multicellular organism have the same genes with the same chromosomes
however their expression varies from cell to cell depending on their function
