How many marker loci are necessary? Analysis of dominant marker data sets using two popular population genetic algorithms

Michael F. Nelson, Neil O. Anderson

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The number of marker loci required to answer a given research question satisfactorily is especially important for dominant markers since they have a lower information content than co-dominant marker systems. In this study, we used simulated dominant marker data sets to determine the number of dominant marker loci needed to obtain satisfactory results from two popular population genetic analyses: STRUCTURE and AMOVA (analysis of molecular variance). Factors such as migration, level of population differentiation, and unequal sampling were varied in the data sets to mirror a range of realistic research scenarios. AMOVA performed well under all scenarios with a modest quantity of markers while STRUCTURE required a greater number, especially when populations were closely related. The popular ΔK method of determining the number of genetically distinct groups worked well when sampling was balanced, but underestimated the true number of groups with unbalanced sampling. These results provide a window through which to interpret previous work with dominant markers and we provide a protocol for determining the number of markers needed for future dominant marker studies.

Original languageEnglish (US)
Pages (from-to)3455-3470
Number of pages16
JournalEcology and Evolution
Volume3
Issue number10
DOIs
StatePublished - Nov 21 2013

Keywords

  • AFLPs
  • AMOVA
  • ISSRs
  • Invasive species
  • Phalaris arundinacea
  • STRUCTURE
  • Sample size

Fingerprint Dive into the research topics of 'How many marker loci are necessary? Analysis of dominant marker data sets using two popular population genetic algorithms'. Together they form a unique fingerprint.

Cite this