As a little girl, I always wanted a pony for Christmas. Santa never brought me a pony. So in my late 40s, I started taking horseback riding lessons. When I turned 50, I got my first horse, an Icelandic named Blessi (Veigar frá Búðardal). Little did I know how much fun life with an Icelandic was going to be. Blessi has a unique perspective on life. I hope you enjoy reading about it as much as I enjoy Blessi. And you will probably read about my cats from time to time.
DNA is the hereditary material passed down from generation
to generation. Most DNA is located in
the nucleus of the cell.In the nuclear
DNA of the horse, 32 chromosomes come from the sire and 32 from the dam. However,
Mitochondrial DNA (mtDNA) is located in mitochondria which are that part of the cell that converts
energy from food directly into a form that the cell can use.
MtDNA is highly mutatable and evolves
frequently over time. In horses and most
organisms, mtDNA is inherited from the mother so that researchers can study
changes in a species over time and the evolutionary relations between and among
organisms. (Arabian Horse Society,
2011)Research using mtDNA enables scientists
to provide additional information about the evolution of equines and the
relationships among equine breeds.
Check the posts for the next few days to see the results of recent mtDNA research into the origin of the Icelandic horse.
Arabian Horse Association (2011) Mitochondrial DNA (mtDNA) –
What Is It and What Does It Tell Us.Provided
by the AHA Equine Stress, Research and Education Subcommittee on Genetic