Abstract

Abstract: A method has been developed for the in vitro synthesis of nearly complete double stranded DNA copies of polyA containing eukaryotic mRNAs. Amplification of in vitro synthesized DNA using molecular cloning techniques has provided large amounts of homogeneously pure eukaryotic gene sequences which can be studied directly or employed as hybridization probes for the identification and isolation of DNA sequences contiguous to structural genes in chromosomal DNA. The fidelity of in vitro synthesis and the stability of synthetic DNA in bacteria is demonstrated by the fact that the entire nucleotide sequence of a cloned DNA copy of rabbit β-globin mRNA is in complete agreement with available β-globin protein and mRNA sequence data. We are using the method of cDNA cloning to study the structure and chromosomal organization of a highly complex set of developmentally-regulated genes in the Silk Moth Antharaea polyphemus .

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