Cytosine Hexnut C Pyrimidine 190532798

Tags: copy model medical formula cell test information pair biology science oxygen nucleus carbon biochemistry dna molecule ancestry nitrogen identical phosphorus identify genetics hydrogen genealogical gene genome genealogy chromosome replication heredity nucleotide nucleotides cytosine cytoplasm double helix deoxyribonucleic acid telomere pyrimidine nucleic acid hydrogen bond helical structure hydrogen bonding bio science hexnuteducational