Nucleic Acids Research, 1977, Vol. 4, No. 11 3753-3768
© 1977
Articles |
Intramolecular base composition heterogeneity of human DNA
,
Dep. Phys., Univ. Texas System Cancer Cent., M.D. Anderson Hosp. and Tumour Inst. 6723 Bertner Ave., Houston, TX 77030
*Div, Sci.and Math., Coll. of the Virgin Islands St. Thomas, VI 00801
**Dep. Chem., Univ. California, Davis, CA 95616, USA
To whom reprint request should be addressed
Received July 22, 1977. The intramolecular base composition heterogeneity of human DNA has been investigated by electron microscopic observations of partially denatured structures and by equilibrium solution thermal denaturation techniques. DNA sequences having an average length of less than 2000 base pairs are found to be heterogeneous in base composition. These heterogeneous sequences occupy a minimum of 67 to 81% of the human genome.