The Book of Mormon and New World DNA

Miraculous claims surrounding the coming forth of the Book of Mormon are an evidence of the prophetic calling of Joseph Smith. Critics intent on discrediting the Restoration point to DNA studies on indigenous American peoples in an attempt to expose Joseph, the Book of Mormon, and The Church of Jesus Christ of Latter-day Saints as frauds. Claiming that scientific evidence excludes any possibility that Middle Eastern or ancient Jewish travelers came to the Americas in antiquity, such critics attempt to sow seeds of doubt in the minds of Latter-day Saints and those of other faiths concerning the authenticity of the Book of Mormon as an ancient religious text. Are these studies credible? Do the data actually show what the critics claim? Do they discredit the Book of Mormon, or is there biological and other scientific evidence that supports the claims that it is indeed an ancient record of a people that once inhabited the Americas?