There are five male Nichols descendants who have taken the yDNA test in the line of Joshua Nichols, Sr. of Iredell Co., N.C. All have been tested with FamilyTreeDNA. All show matches sufficient to confirm Joshua Nichols, Sr. as their common ancestor. For those wishing to research yDNA for this family line, I recommend testing with FamilyTreeDNA directly. A note on the FTDNA website reflects the following.
"Note: Any transfer of genetic information or personal data, including STRs for Y-DNA and mutations for Mitochondrial DNA, from FamilyTreeDNA to any other entity, including Geni and MyHeritage, is completely voluntary and at the sole discretion of the user transferring the data. FamilyTreeDNA takes no responsibility for any consequences from the decision of users to transfer data to any other entity. In addition, please note that Geni is a collaborative genealogy platform and users should familiarize themselves with Geni's privacy policy before transferring any information."
The yDNA signature of this Nichols family line was first entered with FamilyTreeDNA in 2003 and has been upgraded several times since. For clarity and simplicity, it is recommended that Nichols males wishing to compare their own yDNA to this Nichols line, test directly with FamilyTreeDNA for best results.