Haplotype convergence is a term used in the study of DNA haplotypes (series of closely related genetic markers) for two haplotypes resembling each other due to chance.
Description
Two haplotypes may contain similar markers for two different reasons: coincidence; and common ancestry, which would imply convergent evolution. By coincidence, random mutations over sufficient time can result in the same or similar markers being present in two haplotypes, as the markers randomly change. Coincidence becomes less likely if more markers are tested, since that would require increasingly unlikely multiple coincidences.
References
Haplotype convergence Wikipedia(Text) CC BY-SA