The concept of selective breeding was discovered in mid-1800 by monaco Austrian Johann Mendel. He put two "laws" that has been forgotten until its rediscovery in the early 1900's.
Mendel's first law states that if two parents are crossed and pure strains, which differ only by a characteristic for which there are two dominant factors (his word for the genes) and the other with two recessive factors, all descendants of shows the dominant first-generationCharacteristic factor. For example, crossing a true breeding black-coated parents, and a parent breeding true in a blue-coated black coated black kitten result is dominant over blue.
The second law states that the intersection of the descendants then produce diversity in the same property. Some will look like any of the grandparents in relation to this feature and some will look like either of them. Consequently, some next-generation blacks have coats, blue coats, and some few others arecolored coats.
Now we know that all the functions controlled by a cat or any living being for that matter, are the genes that are arranged on chromosomes. If fertilization occurs, the male sperm unites with the egg from the female and the offspring produced chromosomes are arranged in pairs. Half of each pair comes from the father, while the other half comes from the mother. Thus, genetic programming of the animal you just created, as its functionsbeen determined.
Breeders try to produce puppies with a great show because of the potential continuation of the best qualities of the parents and the improvement of other functions. You can completely on aesthetic qualities, because the utility of animals in relation to the function should not be considered. While breeders of other animals may also consider "skills" or the purpose of what the young person is like race horses, cattle, working dogs, where appearance is not used muchThe number one reason.
New breeds and varieties are found in one of three ways.
Mutation similar to cat breeds, like the Sphinx, are American Wirehair, Cornish Rex and Devon Rex examples. The mutations are impossible to predict, but if they occur, they are passed on to subsequent generations like any other gene.
Recombination of mutated genes, usually the new colors, instead of entirely new breeds. It is, as breeders finally developed a dozen varieties ofBurmese cat.
Current selection of polygenes also to produce a quantity of genes known to stimulate the desired characteristic. No change is involved, only the selection for the breeding of additional members of each new generation, which best illustrates the desired properties. The Siamese is a man-made process for many generations.
Mutation may explain the fact that the kittens are born to domestic cats. For most wild species, domestication has to be repeatedwith each new generation. Another important term in breeding is "inbreeding". This in itself, is neither good not bad. It is simply a process.
Breeders commonly use inbreeding to purify bloodlines, such as breeding the best to the best to get closer to that "ideal" cat. Inbred offspring resemble each other more with each new generation. But with inbreeding, caution must be exercised to ensure that no harmful recessive trait is brought out. For example in some animals, temperament, poor confirmation.
If a Cat Breeder wanted to obtain long haired kittens with point coloring, they would breed a "purebred" longhair ie. black and cross it with a pointed shorthair ie. Siamese. The genes for the black color and short hair are dominant and so all of the kittens will have these characteristics. However, all of the kittens will also have genes for point coloring and long hair. Than, if some of these kittens are crossed, the next generation could include cats with various permutations of the four characteristics (black/point/long haired/shorthaired), including some of the desired longhaired cats with the point coloring.
You will often hear the words "Homozygous" which means breeding true. Heterzygous is "mixed" or considered the "recessive" gene. As you first experiment with your breeding, you may note that some of your litters are consistent, others are not as they will contain both of the above dominant and recessive genes. However, as you continue to mate some of the selected offsprings, this is when "selective breeding" will bring out the desired feline offsprings.
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