Du Bose Heyward's use of folklore in his Negro fiction

Introduction; Synthesis of deoxyribonucleotides; Phosphorylation of deoxyribonucleotides; Synthesis of DNA by escherichia coli polymerase; Synthesis of DNA by calf thymus polymerase; Synthesis of DNA in bacteriophage-infected escherichia coli; A morphological picture of the chromosome; Replication of DNA; Exchanges between DNA subunits and genetic recombination; Sequences of replication of DNA in chromosomes.