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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.
Hybrid speciation in animals is primarily homoploid. While thought not to be very common, a few animal species are the result of hybridization, mostly insects such as tephritid fruitflies that inhabit Lonicera plants [20] and Heliconius butterflies, [21] [22] as well as some fish, [15] one marine mammal, the clymene dolphin, [23] a few birds.
Nevertheless, in plants, hybridization is a stimulus for the creation of new species – the contrary to the situation in animals. [34] Although the hybrid may be sterile, it can continue to multiply in the wild by asexual reproduction, whether vegetative propagation or apomixis or the production of seeds.
Hybrid between red-eared slider and Ouachita map turtle. Genus Trachemys. Species T. scripta. The hybrid between a red-eared slider and a yellow-bellied slider. Class Mammalia. Clade Euungulata. Order Perissodactyla. Suborder Hippomorpha. Family Equidae – Equid hybrids. Horses can breed with Przewalski's horse to produce fertile hybrids.
F1 hybrid (also known as filial 1 hybrid) is the first filial generation of offspring of distinctly different parental types. [1] F1 hybrids are used in genetics, and in selective breeding, where the term F1 crossbreed may be used. The term is sometimes written with a subscript, as F 1 hybrid. [2] [3] Subsequent generations are called F 2, F 3 ...
However certain natural constraints act to limit the evolution of inbreeding avoidance, particularly when there is a risk of mating with a partner of a different species (heterospecific mating) and losing fitness through hybridization. [16] Inclusive fitness appears to be maximized in matings of intermediately related individuals. [17]
Elk Mating Behavior Throughout mating season, rivals often challenge a dominant bull for his harem. Frequent posturing by the challengers includes bellowing, pacing, thrashing their heads, and ...
Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent, to achieve offspring with a genetic identity closer to that of the parent. It is used in horticulture, animal breeding, and production of gene knockout organisms.