Ask Joe Stuff #2
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[music] You guys had questions, I've got some answers. It is time for another Ask Joe Stuff! [music] Ok, let's get this show on the road. o-dawgtheinvincible asks "What are the odds that someone has existed before that had my exact genetic code? Do I have a medieval or Roman twin?" Well, even identical twins or clones aren't completely genetically identical. Even though they might start that way, through development they might get 300-400 or even more genetic mutations, and a lot of the difference that we see in identical twins is due to gene expression, and not the actual gene mutations themselves. Consider this: each parent gives 23 chromosomes to either its sperm or its egg, that means there's 8.4 million combinations that those can shuffle up. Combine two parents and you...
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[music] You guys had questions, I've got some answers. It is time for another Ask Joe Stuff! [music] Ok, let's get this show on the road. o-dawgtheinvincible asks "What are the odds that someone has existed before that had my exact genetic code? Do I have a medieval or Roman twin?" Well, even identical twins or clones aren't completely genetically identical. Even though they might start that way, through development they might get 300-400 or even more genetic mutations, and a lot of the difference that we see in identical twins is due to gene expression, and not the actual gene mutations themselves. Consider this: each parent gives 23 chromosomes to either its sperm or its egg, that means there's 8.4 million combinations that those can shuffle up. Combine two parents and you...
