Making the world better, one answer at a time. 1% or less About 1% of the population has AB-blood. There are slight differences in the percentage from country to country but in the US and most other countries AB-is approximately 1%. Type AB negative blood is quite rare. In general, the percentage of this blood type in any population is less than 1%. This is due to the fact that type AB blood is the least common type of blood in virtually all populations and, furthermore, Rh negative blood is typically found in only 15% or less of any population. The exact percentage of AB negative blood varies among different ethnic groups and in different geographic regions.
â¢ Both hinny and mule are progenies of crossbreeding between horse and donkey. However, mule is the offspring of a male donkey and a female horse, whereas hinny is the offspring of a male horse and a female donkey. â¢ Mules are more commonly produced compared to hinnies. â¢ Although they both drastically vary in their body sizes, mules are comparatively larger than hinnies.
Looking a bit more into the genetics involved, horses have 32 pairs of chromosomes while donkeys have only 31 pairs. When a male donkey and a female horse mate, they produce a mule (a male horse with a female donkey produces a different creature called a hinny).or example, hybrids of the wild horse (33 pairs) and the domesticated horse (32 pairs) are fertile, and yet they have an odd chromosome out, just like mules do. Clearly then, something more than a difference in chromosome number is contributing to the species-interbreeding barrier.