Search results
Results From The WOW.Com Content Network
The mule is a domestic equine hybrid between a donkey and a horse.It is the offspring of a male donkey (a jack) and a female horse (a mare). [1] [2] The horse and the donkey are different species, with different numbers of chromosomes; of the two possible first-generation hybrids between them, the mule is easier to obtain and more common than the hinny, which is the offspring of a male horse ...
A mule is a sterile hybrid of a male donkey and a female horse.Mules are smaller than horses but stronger than donkeys, making them useful as pack animals.. In biology, a hybrid is the offspring resulting from combining the qualities of two organisms of different varieties, subspecies, species or genera through sexual reproduction.
Sterility has a wide range of causes. It may be an inherited trait, as in the mule; or it may be acquired from the environment, for example through physical injury or disease, or by exposure to radiation. Sterility is the inability to produce a biological child, while infertility is the inability to conceive after a certain period. [1]
However, when hybrids are produced between both species, the gene flow between the two will continue to be impeded as the hybrid males are sterile. Also, and in contrast with the great vigor shown by the sterile males, the descendants of the backcrosses of the hybrid females with the parent species are weak and notoriously non-viable.
A male donkey (jack) crossed with a female horse produces a mule, while a male horse crossed with a jenny produces a hinny. Horse–donkey hybrids are almost always sterile because of a failure of their developing gametes to complete meiosis. [86] The lower progesterone production of the jenny may also lead to early embryonic loss. In addition ...
A Corolla mule was recently euthanized on Oct. 30 after a small scrotal hernia that occluded the ... He also traveled with mares and raised foals that weren’t his — since mules are sterile.
Last month, a juvenile gorilla was found onboard a Turkish Airlines flight from Nigeria to Thailand. Officials believe the gorilla was being trafficked for the illegal wildlife trade, finding the ...
According to most reports, hinnies are sterile and are not capable of reproduction. [1]: 37 The male hinny can mate, but has testicles that will only produce malformed spermatozoa. [4] The dam of a foal carried to term in Henan Province of China in 1981 is variously reported to have been a mule [5] or a hinny. [6]