For years, Humans have copulated with animals... so then, why, in all those years our genes have not mixed?

As disturbing as the thought is, how come we do not have dog people or goat people or sheeple. Are our Double Helix's just not compatable. Asked by SanctusInsomnium 19 months ago Similar questions: years Humans copulated animals genes mixed Science > Biology.

Similar questions: years Humans copulated animals genes mixed.

It's just not possible.... Many animals have differing numbers of chromosomes. Humans have 46; each parent contributes 23. There are animals with fewer than a dozen chromosomes, and some like lobsters have hundreds.

We could only breed with creatures with 23 chromosomes, and even then, it is more complex. Chimpanzees and humans have less than one percent difference in our genes, and yet the histological factors dictate that a hybrid embryo could never implant. We are just too different, and they are our closest relatives..

Heres some explanation for you Typically, you need the same number of chromosomes and must be closely genetically related to have offspring. If the number of chromosomes are the same but the parents are too distantly related, it may be possible to have offspring but the offspring would be infertile. There are other biological barriers as well.

Typically sperm of a dissimilar animal cannot penetrate the cell wall of an egg (called the zona pellucida) which specifically is used to keep too-dissimilar animals from breeding. Humans and chimpanzees share 98-99% the same DNA, but have different chromosome counts. Humans did not evolve from chimpanzees, but have a common ancestor.

Humans have a different number of chromosomes from chimpanzees because at some point two of the chromosomes had a mutation that joined them. We know this because for that chromosome in humans, there are telomeres (essentially chromosomal endcaps that prevent "fraying") in the middle of that chromosome instead of only on the ends. In the human genome it is named "chromosome 2" and is considered extremely strong evidence for human evolution from earlier primates (and, implicitly, against for example any form of creationism.) en.wikipedia.org/wiki/Chromosome_2_%28hu... In the former Soviet Union, attempts by Ilya Ivanovich Ivanov to create a chimpanzee/human hybrid were unsuccessful.

Genetics were known at the time, but the double-helix structure of DNA was still undiscovered so it was not known by what method genetics allowed or disallowed certain hybrids: http://en.wikipedia.org/wiki/Humanzee There are a few cases of animals that have different chromosome counts but were able to successfully interbreed. One notable example was an infertile goat-sheep hybrid in Botswana. This should not be possible and under ordinary circumstances is not, but sometimes longshots hit the target.

It was called the Toast of Botswana: http://news.bbc.co.uk/2/hi/science/nature/813466.stm You may also be interested to know about a type of hybridization called cross-gene transfer, where genes from DNA that come in close contact with one-another "jump" from once species to another. This happens most often with single-cell bacteria as a means of gaining the immunity properties of another species of bacteria.It is essentially "naturally occurring" genetic engineering. There are examples of one species of aphid that has the ability to synthesize betakerotine, a necessity for its development.

No other animal can do this, the aphid absorbed this ability from the DNA of a symbiotic fungus. There is also a type of sea slug that gained the ability to partially photosynthesize from DNA that crossed over from algae. This method of hybridizing is interesting because the two DNA bases can be completely dissimilar and basically still join merely by application of close proximity and time.

http://en.wikipedia.org/wiki/Horizontal_gene_transfer Hope you found this interesting and useful..

They are not genetically compatible Animal reproduction requires matching sets of genes from male and female. If the sets don't match, then nothing happens. Most animals have different numbers of chromosomes, species to species.

I seem to remember a species of fish with the same number of chromosomes as humans, but that would not allow interbreeding. Some close species can interbreed. Lions and tigers can breed to form ligers and tigons.

Horses and donkeys can breed to form mules. I have even seen a zonkey = a zebra + donkey. These mixtures have genetic problems that usually prevent them from mating.

I hope this helps.

The simple answer is that not all those incidences resulted in viable off spring and... the very few that did,did not mature at all or enough to mate with humans a second time. We do have animal DNA in our genome since...we are animals. We even have to vestigial partial alleles, missing both ends and therefore, dormant, of the viruses that attacked the first amphibians which ventured ashore all those many moons ago, (400 to 500 million) years ago.

Not only will you find no goat-men or big foot, we apparently didn’t interbreed with Neanderthal, (pronounced Nay-andar-tall) with a broad “a”. There used to be a state law in Texas: Bachelor men could not own sheep. They were, of course, christian, everybody else was.

Lol Real history is fun. Next lesson: HOW THE HEBREWS STOLE THE 10 COMMANDMENTS, AND FROM WHOM THEY STOLE THEM. (I've no doubt the threft was unintentional).

Questions from this lesson will be on your final. Sources: rednecksputter, fill-oss-a-fur, inadequate education, read some, been places.

That'd be one of the many areas where C. Darwin was wrong. He supposed that our genes were more malleable than they really are.

He was wrong on two levels. First, Gregor Mendel's experiments with pea plants proved that genes that "disappear" only seem to disappear but then reappear later in the subsequent progeny--recessive genes. Darwin had that book in his library, but the pages were uncut, which means he never bothered to read what directly contradicted his own (very badly written) book.

Second, mutations happen, but 99.9% of them damage the genome. "Positive" mutations? Get a snake with two heads or a cow with an extra leg and they're picked off MORE easily in the wild.

There's no survival advantage to such things.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.