6.A nucleotide polymer capable of storing and transferring genetic information Chemical reaction
Macromolecule
Carbohydrate
Nucleic acid
Lipid
Protein

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

high growth (apex)