Distribution of MLH1 Foci in Horse Male Synaptonemal Complex

Al-Jaru, A., Goodwin, William H orcid iconORCID: 0000-0002-3632-3552, Skidmore, J. and Khazanehdari, K. (2014) Distribution of MLH1 Foci in Horse Male Synaptonemal Complex. Cytogenetic and Genome Research, 142 (2). pp. 87-94. ISSN 1424-8581

[thumbnail of Version of Record] PDF (Version of Record) - Published Version
Restricted to Repository staff only
Available under License Creative Commons Attribution Non-commercial No Derivatives.

367kB

Official URL: http://dx.doi.org/10.1159/000357152

Abstract

Advances in molecular cytogenetics have provided the opportunity to study events during prophase I of meiosis. Immunofluorescent localization of different meiotic protein components were used to characterize the early stages of the first meiotic division in horse spermatocytes. The frequency and distribution of recombination events during prophase I were investigated using the mutL homolog 1 (MLH1) protein that is known to be associated with these events. The frequency and distribution of MLH1 foci were investigated in pachytene nuclei of 6 fertile stallions, and the average relative synaptonemal complex length was found to be highly correlated with the average number of MLH1 foci. The frequency and distribution of MLH1 foci were found to closely correspond to the frequency and distribution of chiasmata on metaphase I chromosomes, and genetic length, calculated from MLH1 foci data, for the whole genome was 2,505.5 cM.


Repository Staff Only: item control page