CRUM/CRUMB/KROM Families DNA Project- Background

Administrators

Surnames

Crom, Crum, Crumb, Krom, Krum

Background

Have you hit a brick wall in your Crum/Krom family history research? Do you want to exchange information with others interested in the Crum/Krom family genealogy? The Crum/Krom family DNA project may help you find the information you are seeking. Molecular genealogy can help break down those brick walls and connect you to others who share your ancestry. It is the latest tool available to family historians. Molecular genealogy uses Y-DNA test results to find those with the same surname who share a common ancestor. The submitters with a match can share their research results and help one another expand their family tree. The test is quick and painless. It involves ordering a kit from Family Tree DNA. The test kit contains a cotton swab which the participant rubs along the inside of his cheek. The swab is returned to the lab and in several weeks the results are mailed to the participant. The participant can then check the Family Tree DNA surname website for participants who match their DNA test results. Only those participants who have given permission for others in the surname project to contact them will have their contact information posted. The public website will list only the the surname spelling, test kit number and earliest known ancestor. No other personal information is posted on the public website. 

The test looks at some of the DNA which is contained in the chromosomes that parents pass on to their children. Half of a child's chromosomes come from the father; half come from the mother. Only males have Y-DNA, which is passed from father to son, virtually unchanged. Through DNA in the chromosomes, parents pass on a molecular record of the child's ancestors. Although 99% of DNA is identical in humans, it is the other 1% that makes each of us unique. Through thousands of years, and hundreds of generations, a few mutations occur. These mutations are passed from father to son and differentiate families with the same surname. The differences are called haplotypes. The mutations measured in the DNA tests occur in what is called "junk DNA". The purpose of the markers in "junk DNA" is not fully understood; "junk DNA" has no known medical function although recent research shows it may have some regulatory impact on the genes. 

DNA tests must be used in connection with genealogical research to help identify relationships. If two results are compared and the results differ, then the two are not related. If the test results are identical, then the two share a common ancestor. Family Tree DNA will provide a prediction as to how many generations there are to the most common recent ancestor. Since this prediction is only an estimate, it is recommended at least 37 markers be tested to produce the most meaningful results. The actual connection between the two participants will rely on standard genealogical research and comparison of the family trees.

To order a test kit, click on the box above "Join Request." You will be taken to the page where you will be able to order a test kit. By joining the surname group, you will receive a reduced cost on the test kit. Since only men have Y-DNA, women interested in the Crum/Krom surname project should ask a male relative with the surname to submit a sample. In order to join the group, please submit a list of your known Crum/Krom ancestors.

Family Tree DNA offers two other tests. One is for the mitochondria or MtDNA.  The mother passes her MtDNA to her offspring, both male and female. Only the female passes it on to the next generation. Thus, MtDNA test shows the mother's mother's line. An MtDNA test is not as useful as the Y-DNA test for genealogical purposes. This is because the MtDNA mutates much more slowly than does the Y-DNA and because females do not usually hand down their surname to their daughters. Therefore, it is difficult to differentiate family groups by surname studies as is done with Y-DNA surname groups. Some adoptees and others, however, have found the test useful for determining whether a particular woman is possibly a family member.

The autosomal, or Family Finder, is another test offered by Family Tree DNA. This shows all the lines of an individual. Since at each generation, only 50% of an individual's genetic material is passed on to the offspring, the test is most reliable to the third cousin level. It is up to the participant to find matches and exchange information to determine their common ancestor.

Participants are welcome to order these other tests through the group surname project in order to receive the surname group discount. Please remember, though, that the focus of this project is on the Y-DNA tests to illuminate family groups of those with the surname Crum and its variations.

The surname group has a General Fund to aid those whose lineage may be of interest to the surname group but whose funds are limited.  Any size donation is greatly appreciated! If you choose, you can donate anonymously. Thank you!


General Fund

Current balance: $25.00

Type Amount Date Donor Note KitNum Donation Type
Credit $25.00 11/21/2012   Anonymous

Project Stats

Statistic Type Count
Big Y 1
Combined GEDCOMs Uploaded 2
DISTINCT mtDNA Haplogroups 9
DISTINCT Y-DNA Confirmed Haplogroups 5
DISTINCT Y-DNA Predicted Haplogroups 0
Family Finder 16
Genographic 2.0 Transfers 2
Maternal Ancestor Information 17
mtDNA 12
mtDNA Full Sequence 6
mtDNA Plus 10
mtDNA Subgroups 0
Paternal Ancestor Information 24
Predicted Y-DNA Haplogroups 3
Total Members 39
Unpredicted Y-DNA Haplogroups 0
Unreturned Kits 4
Y-DNA Deep Clade (After 2008) 1
Y-DNA Deep Clade (Prior to 2008) 2
Y-DNA Subgroups 5
Y-DNA111 2
Y-DNA12 24
Y-DNA25 22
Y-DNA37 20
Y-DNA67 11