It shouldn't cross species barriers or rather it cant cross species barriers.
And it doesn't. Every organism is the same species as its parents, assuming it is not a hybrid.
Selective breeding has limits and the further you move away from the natural original the weaker the animal becomes with reduced fitness.
A Cocker Spaniel is not as fit to survive in the wild as a wolf. It has, however, been bred for specific traits that make it more likely to survive in an environment with humans.
Selective breeding has never produced and new species or type of animal.
That is not correct. New species of fruit flies have been produced, incapable of breeding with the parent species. Chihuahuas cannot reproduce with Great Danes without human intervention and perhaps not even then.
Each species has the capacity to have great variation within its types.
Some species have more variety than others.
One more thing: What are "types"? In biology there is a classification system, Kingdom, Phylum, Class, Order, Family, Genus, Species. And because the real world does not fit into neat boxes, there can be taxons like Sub-phylum, or Super-family. But "types", "varieties" and "kinds" are not part of the classification system.
When they say that there are many different species of bats they are all still varieties of bats.
And all apes are still apes. That includes humans.
The ability to make new varieties of bats and sub species or different breeds within a type or species of animal doesn't mean that this can be extended to take it beyond those types of animals.
Nor does it mean that it can't. Your objections are as tenuous as your definitions. You just assert without the justification of evidence or argument.
Just because there are many varieties of bats and they have lost the ability to breed successfully with each other doesn't mean they are going to turn into a completely different type of animal. It doesn't mean that all animals have a common ancestor. That is taking it to far.
There is lots of evidence of common ancestry. There are shelves of volumes and publications of evidence.
...
I will delete here more blathering about "types", "breeds", and "varieties", none of which you define or differentiate. Example:
I think some label variety of an animal as a new type of animal.
How, exactly, is a "variety" different than a "type"?
But isn't those sequences just a recombination of the same genetics that was already there.
It is the same genetics in the sense that the same chemistry, the same laws of genetics apply, but mutations to the genome are observed. New alleles appear, some genes are mutated to different forms, and some genes can be deactivated, or even vanish from the gene pool, extinguished by a favorable mutation.
It may have produced variety and breeds and even sub species but it doesn't produce totally new types of animals.
No one but you, and your coreligionists say that they have to be "totally new". Evolution says that they
cannot be totally new. Whales and hippopotami still have traits in common. You are still an ape.
They say that mutations are basically an error in the copying process of genes. almost all mutations either get corrected, or become something that makes an animal sick, weak and even die out.
That means that natural selection removes the failures.
So a positive and beneficial mutation is rare thats going to add some new info and a different feature to an animal if evolution were true.
How rare is "rare"? You have several hundred mutations that you got from neither of your parents.
Those new features and abilities happen gradually through small changes bit by bit.
That's what Darwin thought. That's what scientific observation finds.
So if all these creatures are classed as new species that came from mutations then how many positive mutations would be needed to make all the species that have ever walked the earth. For each individual new species there would be many positive mutations to make the types of overall changes evolution claims. Turning dinos into birds and dog like creatures into whales. You would need 100s just for one animals wouldn't you as there would be many adjustments both internally and externally to change into a completely new creature.
It would not be a completely new creature. We still share some basic genetics with bacteria, with fish, with reptiles, and with all other mammals.
You erect in your mind all sorts of straw men, completely imaginary, and then argue against them.
Unless the changes came in big chunks but then that is almost saying that the process has some sort of intelligence to it and it is producing almost new creatures very fast in 2 or 3 tranformations.
You say the "changes came in big chunks" but no biologist says that. Two hundred generations of fruit flies isolated in differing environments produces species that cannot interbreed.
Its all suppose to be random and accidental isn't it.
Variation is random, in limits. Selection is not random.
So trial and error will not produce the right sort of changes right away.
Evolutionary theory does not say that speciation occurs "right away".
So by the time you factor in all the negative mutations ...
Negative mutations are selected out. They need not be "factored in".
...as well as the rare positive ones ...
Again, how "rare" is "rare"?
...and then times that by all the individual mutations needed for each and every animals and then times that by the millions of species.
I don't see any equation there, and certainly no numbers. Nor do I see any premisses or logical conclusion. In fact:
So by the time you factor in all the negative mutations as well as the rare positive ones and then times that by all the individual mutations needed for each and every animals and then times that by the millions of species.
That isn't even a sentence!
Your going to need an awful lot of those rare positive mutations.
How many is "an awful lot"?
I think some scientists have done calculations and they have found there just isn't enough time to produce the amount of species that have ever walked the earth.
Is that what you think, or what you want to believe. Which scientists were those and where are their calculations?
So thats why most of what we see is variety, breeds and sub species within the same kinds/types of creatures.
What "we see" is only what you want to see.
The genetics needed for a lot of the changes were already there and the original creatures could pass on a lot of the capacity to change as time went on.
The changes were already there. There is genetic variation within a species. Further changes are possible, and such changes have been observed.
Then creatures went their own ways and became isolated from the original ones which more or less made species.
And then the new species could further subdivide until you have several species all descended from the same ancestral population. Reflect this common ancestry you would place them all in the same Genus.
If there was any process that could introduce new genetic info into an another animals genetics from a different one it would be HGT.
It is found in retroviruses.
There is evidence that there was much more HGT in the distant past.
It is still common in bacteria. I am not certain about the Archaea.
This could account for a lot of genes jumping from one type of animal to another.
Perhaps you can cite some animals where horizontal gene transfer has occurred?
You make much use of argument with undefined terms whose definitions are crucial to the argument. You talk of mathematics without producing a single equation or calculation. If I didn't realize that you were religious I would have to question either your intelligence or your sanity. But you are merely religious. It seems to be endemic in the human species. Perhaps, one day, we will find a cure.
