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Y-DNA RESULTS

37 Marker test performed by Family Tree DNA

					1																									Y	Y
					9							3		3																C	C
		Locus	3	3	/	3	3	3	4	3	4	8	3	8	4	4	4	4	4	4	4	4	4	4	4	4	4	4		A	A	4	6	5	5	C	C	4	4
		designation	9	9	3	9	8	8	2	8	3	9	9	9	5	5	5	5	5	4	3	4	4	6	6	6	6	6	H	I	I	5	0	7	7	D	D	4	3
			3	0	9	1	5	5	6	8	9	/	2	/	8	9	9	5	4	7	7	8	9	4	4	4	4	0	4	I	I	6	7	6	0	Y	Y	2	8
					4		a	b				1		2		a	b							a	b	c	d			a	b					a	b
	J. N. Cossitt	Allele Values	13	24	14	11	11	14	12	12	11	13	13	29	18	9	9	11	11	25	15	19	29	15	15	16	17	11	11	19	23	15	16	18	17	39	39	12	12
	C. D. Cossitt		13	24	14	11	11	14	12	12	11	13	13	29	18	9	9	11	11	25	15	19	29	15	15	16	17	11	11	19	23	15	16	18	17	38	39	12	12
	H. D. Cossitt		13	24	14	11	11	14	12	12	11	13	13	29
	W. N. Cossitt		13	24	14	11	11	14	12	12	11	13	13	29	18	9	9	11	11	25	15	19	29	15	15	16	17	11	11	19	23	15	16	18	17	38	39	12	12
	R. L. Cossitt		13	24	14	11	11	14	12	12	11	13	13	29	18	9	9	11	11	25	15	19	29	15	15	16	17	11	11	19	23	15	16	18	17	38	39	12	12
	R. W. Frey *		13	23	14	11	11	14	12	12	13	13	13	29	17	9	10	11	11	25	15	19	28	15	15	16	16	11	11	19	23	17	15	19	17	36	40	12	12

*DNA that is carried on the Y chromosome can only be passed from father to son.  This is why, even though R. W. Frey and W. N. Cossitt have the same Great Great Grandfather (Timothy Hopkins Cossitt 1817-1884), they are not a perfect match.  The Y-DNA for R. W. Frey came from Heinrich Frey who was born in Germany in 1673.  The Y-DNA from the five Cossitt Cousins named above came from Rene Cossitt who was born in France around 1690.  When the Y-DNA of J. N. Cossitt, C. D. Cossitt, W. N. Cossitt and R. L. Cossitt is compared to that of R. W. Frey, there are a total of 26 out of 37 matches. This shows that males that come from European origins have many common Y-DNA Allele Values.

Mutations randomly occur in nature and are shown above as a mismatch.  Look at Locus Designation CDYa for the mismatch between J. N. Cossitt and (C. D. Cossitt, W. N. Cossitt, and R. L. Cossitt).  This mutation occurred from the line of Rene Cossitt Jr. to his son Ambrose, but it is impossible to tell at which generation or with whom this mutation occurred without testing all of the living Cossitt males that descended from Ambrose Cossitt Sr.

In our case, genealogy research has shown that the Most Recent Common Ancestor for J. N. Cossitt, C. D. Cossitt and W. N. Cossitt is Rene Cossitt Sr., the father of Rene Jr., François, and Timothy.  This is a total of 7 generations for J. N. and W. N.  Cossitt and 8 generations for C. D. Cossitt.  The MRCA for J. N. Cossitt , H. D. Cossitt , and R. L. Cossitt is  Rene, Jr, the father of Ambrose, Silas and Asa.  (All at 6 generations.)

The Y-DNA carried by the above named Cossitt Cousins is extremely homogeneous when compared to the general male population with European origins.  While all four of these Cossitt surnamed individuals have identical Allele for the first 12 Locus designations, there are over 730 other tested males (without the surname of Cossitt) that also have these same 12 Allele with more being reported every month.  When the first 25 Allele for J. N. Cossitt, C. D. Cossitt, W. N. Cossitt and R. L. Cossitt are compared to other tested random males, there are 10 without the Cossitt surname who have only one mismatch and 103 with only two mismatches.  When the 37 marker test is compared, there are no other exact matches found.  J. N. Cossitt and (C. D. Cossitt, W. N. Cossitt and R. L. Cossitt) have 1 mismatch and the next closest at this time are 4 males with four mismatches.  It is for this reason that any other Cossitt male desiring to be tested must have all 37 markers tested. 

Family Tree DNA estimates that when there is a 36 out of 37 Allele match, then there is a 60% chance the MRCA is within 4 generation and an 80% chance that the MRCA is within 7 generations.  If there is a complete match on all 37 Alleles they estimate that the MRCA has an 80% chance within 4 generations and a 95% chance within 6 generations. 

ANCESTORS OF J. N. COSSITT                ANCESTORS OF C. D. COSSITT                ANCESTORS OF H. D. COSSITT V
Rene Cosset (1690c-1752)                          Rene Cosset (1690c-1752)                         Rene Cosset (1690c-1752)
Rene Cossitt Jr. (1722-1810)                       Francois Cossitt (1726-1816)                      Rene Cossitt Jr. (1722-1810)      
Ambrose Cossitt (1749-1809)                      Roswell Cossitt (1763-1844)                       Silas Cossitt (1758-1819)                  
Ambrose Cossitt Jr. (1785-1866)                  Jesse Cossitt (1794-1843)                          H. D. Cossitt (1801-1877)              
John Francois Cossitt (1811-1882)               Newton Cossitt (1829-1911)                        H. D. Cossitt Jr. (1859-1924)
Henry Ambrose Cossitt (1852-1928)             Leonard Randles Cossitt (1876-1930)          H. D. Cossitt III (1899-1985)                   
John Henry Cossitt (1880-1954)                   Newton Neville Cossitt (1902-1965)
                                                                Gerald Robert Cossitt (1925-2000)



ANCESTORS OF W. N. COSSITT               ANCESTORS OF R. L. COSSITT                ANCESTORS OF R. W. FREY
Rene Cosset (1690c-1752)                          Rene Cosset (1690c-1752)                         Rene Cosset (1690c-1752)
Timothy S. Cossitt (1731-1795)                    Rene Cossitt Jr. (1722-1810)                      Timothy S. Cossitt (1731-1795)
Timothy J. Cossitt (1754-1836)                     Asa Cossitt (1754-1838)                            Timothy J. Cossitt (1754-1836)
Calvin Cossitt (1786-1867)                           Louis Capet Cossitt (1793-1847)                 Calvin Cossitt (1786-1867)      
Timothy Hopkins Cossitt (1817-1884)           Frederick Gray Cossitt (1839-1883)             Timothy Hopkins Cossitt (1817-1884)
Arthur Cossitt (1854-1932)                           Louis Germain Cossitt (1866-1950)             Harlow Hopkins Cossitt (1860-1952)           
Lester Arthur Cossitt (1892-1934)                 Hubert Pearl Cossitt (1900-1971)                Nancy Harriet Cossitt (1887-1957)  
                                                                                                                                Nada Mildred W  (1906-2009)