Can every person that exists only have been created by that specific female egg, and male spermatozoa?

Question

To clarify: Take me as the example. If another specific spermatozoa from my father had fertilised my mothers egg, or if one of my mothers egg from a different month had been fertilised, then would it still have been me that was created, or would it have been a different individual, albeit one genetically identical (or very close to identical) to me?

When I try and think this through I just cannot get my head around it! Please, no sid james 'carry on' ohh err missus' type of answers. I mean this as a serious biological/existential question!

Answer 1

its a fact, if it was a different egg or sperm you wouldnt have been created hence you wouldnt be asking this question and i wouldnt be answering it because the other person created your brother or sister might not want to know the answer...it is alot to get the head around its a bit like the lottery...think about this its not the numbers that where picked think of all the possible arrangement of numbers that werent picked....i got to lie down now.

Answer 2

Each spermatozoa and each egg receive a specific set of genes, and the chances that two spermatozoa or two eggs get the same set are close to zero. So yes, would a different spermatozoa have fertilised a different egg, or even the same egg from your mother, you would be different; a bit like fraternal twins.

Answer 3

You wouldn't be identical-each sperm and egg carries different genetic information. There are 2^23 different combinations that each could be carrying. It was mostly chance (although new evidence suggests that the egg "chooses" which sperm will fertilize it) that a specific sperm fertilized a specific egg. Just enjoy your existance and don't try to understand it.

Answer 4

Of course it would be a different individual- brothers and sisters for example. Look at the sex chromosomes that combine to determine the sex. One egg might have the XX chromosome and the other the XY so the first would be a girl and the second a boy.

Answer 5

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Answer 6

I know this might sound obvious but its the best i can come up with
You were created from a specific single sperm from millions joining with a egg from millions, if that specific procedure did not happen then it would have been your brother or sister born instead and so on

Answer 7

You would be somebody else. That's what your brothers and sisters are. You wouldn't be the same because there would be diferent information in it. I am an twin, not identicle, we were cvoncieved at the same time but we have loads of differences. Then there is my older sister, she doesn't even look like us. Same parents but totally different information in the sperm or egg when she was concieved

Answer 8

Yes, there are approximate 30,000 genes in the human genome. You get a copy of them from your mother and one from your farther. The different combinations that you can get from 30,000 genes is 30,000 to the power of 30,000 which is a massive number of possible combination; more that all the people on the planet. So yes you are unique unless you are an identical twin

Answer 9

Yes. It seems pretty obvious to me. You would be a different you with a different sperm or egg. (Or must they both be different?)

There are non-identical twins that exist because two eggs were fertilized by different sperm at the same time. The twins are different.

Answer 10

That first answer is a good one! I reckon that you would still be 'you' regardless of which month you were conceived or which sperm did it. Either way you wouldn't know any different because you would still be the person that you are now - if you get what i'm saying?