Agene loci is a a.)location on chromosome for a specific gene. b.)tight coil of dna foundin the nucleus of a cell. c.)chain of dna chemical base sequences.

2hydrogen and 1 covalent

The main role of dna in the  cell is the long-term storage of information. it is often compared to a blueprint, since it contains the instructions to construct other components of the  cell, such as  proteins  and rna molecules.the main function of rna is to carry information of amino acid sequence from the genes to where  proteins  are assembled on  ribosomes  in the  cytoplasm. mark brainliest, my work is good.