The Native American DNA Sequence is available for both males and females.
For males, you can test for Native American ancestry in either your direct paternal (father's) or direct maternal (mother's) line of ancestors. For females, you can only test for native american ancestry in your direct matrilineal line.
The Y Chromosome is tested for the male Native American DNA Sequence. For the female Native American DNA Sequence, mtDNA is tested.
Everyone can test their autosomal DNA to see if they have some percentage of Native American ancestry utilizing the Family Finder test, but that test will not tell you in which line your Native Ancestry is found
You can read more about proving your Native American ancestry at this link: http://dna-explained.com/2012/12/18/proving-native-american-ancestry-using-dna/
This project is open to people who have proven Native Ancestry via genetics or via traditional genealogy You will be asked for your genealogy or Native connection prior to joining.
I strongly recommend that you subscribe to the free blog, www.dna-explained.com - announcements regarding DNA sales and other things of interest will be made there to avoid sending repeat messages to multiple groups You may also be interested in the blog, www.nativeheritageproject.com.