All your DNA "evidence" not with standing, the Book of Mormon, and Mormons for that matter claimed that the American Indians were pure genetic descendants of Lehi, we don't and never did, the Book of Mormon itself bears witness of that. Ignoring evidence that proves you wrong is a fallacy in and of itself.

Alrighty then...

Moroni 9:7

And now I write somewhat concerning the sufferings of this people. For according to the knowledge which I have received from Amoron, behold, the Lamanites have many prisoners, which they took from the tower of Sherrizah; and there were men, women, and children.

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New Era » 1972 » September

Speak Up, Latin America

“Speak Up, Latin America,” New Era, Sep 1972, 22

In 1901 the total membership of the Church was 278,645. Seventy years later a count was taken of the number of members in the Church who have some Lamanite blood and the total was 282,536. This sum, 4,000 greater than the total Church membership in 1901, includes Lamanite members from the United States, Canada, Mexico, Central America, South America, and the islands of the seas.

To help meet the spiritual needs of many of these Saints, the Church held an area general conference in Mexico City in August. Attended by thousands of Saints from Mexico and Central America, representing the Lamanite as well as Anglo members there, the conference provided them with firsthand spiritual food from the General Authorities.

(From ---> http://www.lds.org/ldsorg/v/index.jsp?vgnextoid=024644f8f206c010VgnVCM1000004d82620aRCRD&locale=0&sourceId=1a0118e7c379b010VgnVCM1000004d82620a____&hideNav=1 )

How is LAMANITE blood different from human blood??