PT - JOURNAL ARTICLE
AU - Zhao, Hongyu
AU - Speed, Terence P.
TI - Statistical Analysis of Half-Tetrads
DP - 1998 Sep 01
TA - Genetics
PG - 473--485
VI - 150
IP - 1
4099 - http://www.genetics.org/content/150/1/473.short
4100 - http://www.genetics.org/content/150/1/473.full
SO - Genetics1998 Sep 01; 150
AB - Half-tetrads, where two meiotic products from a single meiosis are recovered together, arise in different forms in a variety of organisms. Closely related to ordered tetrads, half-tetrads yield information on chromatid interference, chiasma interference, and centromere positions. In this article, for different half-tetrad types and different marker configurations, we derive the relations between multilocus half-tetrad probabilities and multilocus ordered tetrad probabilities. These relations are used to obtain equality and inequality constraints among multilocus half-tetrad probabilities that are imposed by the assumption of no chromatid interference. We illustrate how to apply these results to study chiasma interference and to map centromeres using multilocus half-tetrad data.