What molecules are involved directly with protein synthesis?

cRNA
mRNA
tRNA
DNA

The simple answer is mRNA, tRNA, and rRNA

Explanation:

The gene (DNA) gets turned into a copy of pre-messener RNA (pre-mRNA). This pre-mRNA get spliced by the splicesome (which contains its own RNA, but this is rarely considered part of the process). The processed mRNA then goes to the ribosome where ribosomal RNA (rRNA) and transfer RNA (tRNA) work together to make the protein.

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.

fossil's are like over rated rocks like low key not gonna lie i don't get why we can't just call them old rocks like for real i mean i call my grandpa and grandma that smh