Population growth rate of one percent in the year 2000: an unattainable target

The author demonstrates the unattainability of Mexico's population policy target of reducing the natural increase rate to one percent by the end of this century. In order to reach this goal, the net reproduction rate would have to decrease to significantly below replacement level, or 0.667; this would produce dramatic changes in the age structure as well. The policy's objectives are also analyzed in terms of the extent of family planning necessary to reach the target growth rate.     

Y chromosome STR haplotypes in the Caribbean city of Cartagena (Colombia)

Haplotype data were obtained from a sample of 173 unrelated male individuals from Cartagena (Colombia), for 16 Y-chromosome STRs (DYS19, DYS385, DYS389 I, DYS389 II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438, DYS439, DYS460, DYS461, DYS635, GATA H4 and GATA A10). No shared haplotypes were observed, demonstrating the usefulness and informative power of these Y-STRs in male lineage identification in Cartagena. Genetic distances were calculated using previously published haplotype data and the lowest values were found for the comparisons with samples of Iberian origin.