Can I quote you on that? German Shepards are not a viable strain?
When the gene pool of a set of organisms becomes quite small, its dissappearance is quite likely. That is why scientists are so worried about species with very few individuals in it. They doubt very much that they can be saved. This is a well known fact donh.
Uh huh. A well known fact when the numbers we are talking about is, say, under 10 for mammals. Is that your assessment of the German Shepard population, Mr. Science?
Oh, and by the way, Mr. Science, the detailed reason scientists have this concern is because an insufficient population in bisexuals means the loss of all the possible instantaneous variations in genetic composition that recessives and other exchange permutations with similar effect to the recessive mechanism make possible. In other words, too much the capacity of a species to cope with it's environmental changes by altering it's physical capacities through genetic reformation is lost.
In effect, a bisexual species is really, in comparison to unisexuals, a vast conglomeration of species always ready to zip out from the drawing board in response to the environment. Externally caused mutation isn't really the biggest player in the DNA story, if it ever was.
First of all, in the previous post we were speaking of chihuahuas not German Shepherds, seems you like to create confusion for no reason at all, must be a habit with you and all evolutionists.
The problem with a small genetic pool is not the number of animals, but the variety of the gene pool in them. You can breed millions of animals, but if they come from just two original parents, then the species will die from the small gene pool in it regardless of how many descendants it has. The problem is twofold here. Because these animals are bred often with fairly close relatives, the gene pool gets more restricted the 'purer' the breed becomes. This constant inbreeding leads to bad mutations being passed and destroying the species because when both parents have the same bad mutation the offspring will almost certainly be very unviable. In addition, look at the wolf, from which dogs were bred. Look at the vast variety of genetic diversity which it had in order to be able to produce such a vast variety of breeds. This makes the wild wolf a very hardy species, able to adapt to numerous things. The bred dogs are not as adaptable and it is very doubtful that many of the breeds would survive if left in the wild without humans tending to them. So yes, these breeds are much less viable than the wild stock they came from.