can a human sperm fertilize egg of other animals like goats etc..?

Answer 1

Goats? No. Much too far apart, the genetics are too different.

And, if it could happen, it would have happened many times already on farms around the world and through history.

Our closest animal relative is the chimpanzee. We share about 96% of our DNA.

Other hybrids that have worked but are sterile include mules (male donkey, female horse) and jennys (male horse, female donkey), "ligers" and "Tilions" lion/tiger and tiger/lion.

There's a fertile buffalo / cattle cross that breeds with itself or either ascestor.

DNA differences can be accurately assessed (in a very well equipped genetic lab) by measuring the melting point of the two parent DNAs and of the mix. The mix will melt lower and be 1 degree lower for each 1% of difference in the DNA. So I'd try to find out the difference of what has been done (horse/donkey, lion/tiger) and compare it to the 4% difference between human and chimps.

As someone else said, screwing other primates can (and may well have) created new human diseases. Certainly AIDS came from SIV in apes. Maybe someone was butchering a chimp or a maccaque 70 years ago. Maybe they were doing something else.

Answer 2

In the strictest sense, yes it could. (It actually takes more than one sperm to fertilize an egg, but only one gets inside. The rest seem to trigger an increase in the permiability of the outer cell membrane, so the winner gets in there.) In light of the previous answer, you might have to use a mixture of goat and human sperm: The goat sperm to "unlock" the egg, and get a human sperm inside.

But that is all that would happen. There could be no successful joining of human and goat gametes because they have different numbers of chromosomes, and the gene positions on the chromosomes are so different. With some genes from one species and other genes from the other species, it is very unlikely that all the necessary protein synthesis genes and their regulator genes would be able to work together. (When all the chromosomes come from the same species, it is much more likely that the new combination will work together.)

Even between two animals with a similar number of chromosomes, like a donkey (62) and a horse (64), there are still too many mismatches to create fertile offspring. That is why mules are sterile.

So human/goat crosses will never produce anything at all. But humans and chimps, or humans and bonobos DO have very similar chromosomes (46 versus 48) and gene sequences that are 99% identical. By examining the stained chromosomes side by side under a microscope, there is remarkable similarity of lengths and patterns. Human chromosome 2 (a very long one) has all the patterns of two of the shorter ape chromosomes, so it looks like those two became fused into one when we parted ways on our evolutionary paths. So it might be possible to make a mule-type cross between us and our nearest "cousins", without resorting to any of the genetic engineering tricks of the trade at all.

I recommend that you don't try the experiment! If you failed, you could go to jail for having sex with an animal. If you succeeded, it would cause such an uproar that lots of people (and probably chimps, too) would be killed in the ensuing riots.

Answer 3

I actually checked a previous Yahoo answers question on the subject. Here is the best answer:

PseudoSlySpy...
3 months ago
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Best Answer - Chosen by Asker

Horses and donkeys can produce mules, however, the mule would be sterile. The reason why is because of chromosome pairing. For every gene there has to be a complimentary female gene...23 chromosomes in humans. To think about it logically, if a human had sex with an alien or another type of animal with 23 chromosomes, and became pregnant, then that animal would have to be close enough as far as a species to produce an offspring that would be fertile if they tried to reproduce with either alien or human....
But if a woman tried to get pregnant by some type of animal like a bull or sheep or horse...then, she would not get pregnant by it...

Sickness, dude.....uuuugh
Source(s):
Biology

Frankly you should stick with the Farmers' duaghter, rather than her Goat..... (Don't feel bad about asking, I've watched some Beastality clips (don't ask) and the thought ran through my mind once).

Answer 4

No, not under natural conditions. And the reason is not that the number of chromosomes are not matched. In case of a person having a germ-line mutation/chromosomal anomaly or in case of non-disjunction in meiosis, the sperm may have an extra chromosome, or a part of it. Even then, it can fertilize an ovum with normal chromosome number. So, it has nothing to do with chromosome number.
The actual reason is that the Ovum secretes a factor called Fertilizin, which interacts in a lock and key fashion with an Anti-fertilizin secreted by the sperm. The two factors are species-specific. The fertilizin of human ova is recognized only by human sperms.
This is infact how frogs and fish spawn in an aquatic environment. The eggs are laid in gooey masses in water, then the sperms fertilize them.

Answer 5

The human sperm wouldn't be recognized by receptors (proteins) on the surface of the other egg species.
If two species are very similar genetically they may produce a hybrid which may be fertile. The greater the genetic difference the greater the number of barriers for fertilization to occur.
It helps to read about what constitutes a species and species concepts and speciation (how species differentiate in the wild through geographic and other forms of isolation).

Answer 6

Im not sure abt it.but the thing is all the animals in mammalian kingdom resemble similar growth factors,show similar sex organs starting frm rabbit to man.
as in case of goat there is certainly a chance of conjugation or reproduction if human sperm unites wth the egg of goat.but it is not possible in normal conditions.there should be some media for the transfer.
So scientifically, there is certainly a chance of reproduction b/w human sperm and egg of goat.

Answer 7

Well we can't totally discard the possibilities. However, in present day we do not see such combinations. But if you go to references in old age scripts (not a religious perspective...try evaluating it scientifically), there are instances of fishes giving birth to humans because they got fertilized externally by human sperms. Also, we have references of lion man, fish women, and so on... Surely one might not have just imagined to this extent and written about them. So, might be in the evolutionary process, we have totally shed off the DNA matching. But early during the beginning, it might have been very similar...Supported by the fact that not always a form of life has to come from the same or similar form of life (Darwin's theory).

Answer 8

No. fertilization occcurs when there's a match in quantity with a sperm cell's and egg cell's chromosomes.

Answer 9

It is not impossible, but at a DNA level it is because the cromosomes can´t join each other, then the egg is aborted.

Answer 10

DUNNO... Go ask your maaaaaahhhmmaaaaah!!! Sure anything is possible...like a horse and a donkey...( makes a mule )...But humans and goats... dunno...I've heard that S.T.D.S are shared though, so don't invent a new virus like aids please...OK??