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Prior to the first true chicken, there were non-chickens. The DNA changes came about in cells housed in the egg. So the egg came first. In July 2010,British scientists, using a supercomputer, claimed to have come up with the final and definitive answer.
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Prior to the first true chicken, there were non-chickens. The DNA chan...
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Chickens evolved from non-chickens through small changes caused by the mixing of male and female DNA or by mutations to the DNA. These changes and mutations only have an effect at the point where a new zygote is created. That is, two non-chickens mated and the DNA in their new zygote contained the necessary mutation(s) to the embryonic body plan to make the first true chicken. That one zygote cell then divided and formed a biologically modern chicken.
Prior to that first true chicken zygote, there were only non-chickens. The zygote cell is the only place where DNA mutations could produce a new animal, and the zygote cell is housed in the egg. So, the egg must have come first
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Prior to the first true chicken, there were non-chickens. The DNA changes came about in cells housed in the egg. So the egg came first. In July 2010,British scientists, using a supercomputer, claimed to have come up with the final and definitive answer.
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