Joseph Smith claimed the Book of Mormon was a history of the source if the American Aborigines, so I would approach the Book of Mormon that way.
When we apply DNA evidence it may change when God made Adam but the American Aborigines are not Semites.
Mitochondrial and Y-Chromosome DNA genealogy tests can only tell you which ancestors you may have, and CAN NOT rule out any possibilities of who some of your ancestors may be. Mitchondrial DNA only tracks mother to mother to mother to mother, etc. Y-Chromosome DNA only tracks from son to father to father to father to father, etc. I keep on seeing again and again that since they only take two paternal direct lines, many of your ancestors are left out. One ancestor from a few thousand years can be the direct descendant of a very large group of people (these direct mother and father’s lineage tests would leave out most of my ancestors from 600 B.C.).
evolution.berkeley.edu/evolibrary/news/071101_genealogy
en.wikipedia.org/wiki/Genetic_genealogy#Drawbacks
utexas.edu/features/2007/ancestry/
The Church of Jesus Christ of Latter-day Saints also says that the Book of Mormon does not disagree with other peoples living over in the Americas:
"The Book of Mormon: Another Testament of Jesus Christ is exactly what it claims to be — a record of God’s dealings with peoples of ancient America and a second witness of the divinity of the Lord Jesus Christ. The strongest witness of the Book of Mormon is to be obtained by living the Christ-centered principles contained in its pages and by praying about its truthfulness.
Recent attacks on the veracity of the Book of Mormon based on DNA evidence are ill considered. Nothing in the Book of Mormon precludes migration into the Americas by peoples of Asiatic origin. The scientific issues relating to DNA, however, are numerous and complex."
newsroom.lds.org/ldsnewsroom/eng/commentary/dna-and-the-book-of-mormon
We don’t claim to know if the author of Genesis meant it to be a factual history in every detail. We do know that God made everything from nothing, and man was disobedient. When it happened doesn’t matter.
Stephen, that’s a double standard. The Book of Genesis, part of the Bible (the Word of God as you claim), in chapters 5 and 11 give a specific detailed genealogy with exact names and time in years. If the Bible can do that and still be the Word of God, why can’t Mormons believe the Book of Mormon is much much more vague than your interpretation of the Bible in that aspects we’re comparing, and still believe the Book of Mormon to be the Word of God? That’s just a double standard. You say Joseph Smith said so? So how do you explain why Moses also said so in the Book of Genesis (compared to the Pearl of Great Price), and again, Moses much more specific in his wording.
Stephen, if you can claim that we don’t know when it happened when Genesis 5 & 11 make it so detailed it’s not vague, then why can’t Latter-day Saints take the same stance on, “We don’t know if most came from the Middle East”?
If the Book of Genesis contained a phrase “raining cats and dogs,” some Christians and Mormons would think the author meant cats and dogs were falling from the sky. Some other Christians would think the author meant that it raining real hard.
So explain how that can’t apply to the Pearl of Great Price where it talks about the Native Americans? Genesis is very specific in it’s genealogy, with exact names of people, and exact numbers of years between each one of them, from Adam all the way until Abraham. DNA genealogy saying our most recent common mother being 140,000 years ago from Africa and most recent common father 60,000 years ago from Africa, when it says Noah let out in the Middle East and didn’t have tens of thousands of years between the black African race and the other races (after Noah); this DNA fits the Bible account a lot less than what genetics is given about the Book of Mormon.
So why can’t we be fair? Why can’t it apply to how people interpret the quote from the Pearl of Great Price you gave us? This just doesn’t make any sense why you get to set the standards (when the Bible is so much more detailed in what it actually said, even to the last details of human names and time in years)?