Your lymph nodes or "thymus" promotes the maturation of t cells.
Answer:
Phenotype
Explanation:
"only four phenotypes result from the six possible ABO genotypes. How does this happen? To understand why this occurs, first note that the A and B alleles code for proteins that exist on the surface of red blood cells; in contrast, the third allele, O, codes for no protein."
Sorry if im wrong
Photosynthesis? Chloropasy and chloraphyll.
