Abstract
1. 1. The composition and phyletic distribution of a highly repetitive satellite DNA, isolated from Podarcis sicula, was studied. 2. 2. This DNA was rich in adenine and thymine and displayed frequent adenine stretches. It was always located on the centromeric heterochromatin even in quite taxonomically distant species. 3. 3. Southern blot hybridization of the Taq I satellite on various species of lacertid families showed a close affinity among Podarcis, Algyroides and Lacerta dugesii. 4. 4. All the other taxa investigated did not seem to possess this repeated sequence.
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