Male Horse Meiosis: Metaphase I Chromosome Configuration and Chiasmata Distribution Academic Article uri icon

abstract

  • Chromosome configurations and chiasma frequency during the metaphase I stage of spermatogenesis in the male horse are characterized in this work. The genome-wide frequency and distribution of chiasmata was detected as 49.45 ± 2.07 for 14 fertile stallions. All X and Y chromosomes shared a single chiasma at their pseudoautosomal region, while 1-4 chiasmata were observed in autosomal chromosomes. The chiasma frequency and distribution were further studied for 8 different bivalents identified by FISH in 5 fertile stallions. Genetic length was calculated from chiasmata data for the whole genome as well as for these 8 chromosomes. The findings complement the genetic linkage data and provide insight into the genetic basis of spermatogenesis in normal stallions.

author list (cited authors)

  • Al-Jaru, A., Goodwin, W., Skidmore, J., Raudsepp, T., & Khazanehdari, K.

citation count

  • 2

publication date

  • January 2014