Compendium of Genetic Genealogy
The Compendium is a comprehensive guide to genetic genealogy terminology, best practices, and science. – Rebekah
AANAT – A Gene
AANAT is a human gene. It codes for an enzyme. This enzyme partly controls the production of melatonin ... Read More
Aboriginal
Aboriginal people are the indigenous people for a location. Researchers sometimes call them first peoples ... Read More
African Ancestry – A DNA Testing Company
African Ancestry is a direct to consumer testing company. They are located in the United States of America ... Read More
Ancestry DNA (Ancestry.com DNA)
Ancestry is a genealogy company. They also sell DNA tests for personal ethnic origins and genealogy. Their tests are based on a microarray chip ... Read More
Ancient DNA
Ancient DNA (aDNA) is the DNA of anyone who has been dead for more than 50 years. The name sounds like it should only include really old samples or pre-historic people. However, the methods used to get ancient DNA results apply to most people who have been dead for more ... Read More
Anthropology
Anthropology is the study of human cultures and human society. Cultural anthropology focuses on human behaviors. Physical anthropology focuses on physical artifacts of human society ... Read More
Antisocial Personality Disorder
Antisocial personality disorder (ASPD) is a personality disorder. It is marked by antisocial (criminal) behavior, anger, boredom, and general discontent ... Read More
Archaeology
Archaeology is the study of human history and prehistory. Researchers study the study artifacts and other physical remains ... Read More
Atlantic Modal Haplotype (AMH)
The Atlantic Modal Haplotype is a Y-chromosome DNA haplotype based on six Y-STR markers. Using those six markers it is the highest frequency haplotype in Western Europe ... Read More
Autosomal DNA 3rd Party Sites & Tools
Autosomal DNA is the DNA we get equally from both parents. Most people have autosomal DNA tested at one of the five major testing companies (23andMe, Ancestry, FamilyTreeDNA, MyHeritage, or Living DNA). The following are 3rd Party sites and tools ... Read More
Autosomal DNA Company Comparison Chart
Autosomal DNA is now the most used test for personal ethnic origins and recent genealogy matching. It is also the most complex method. Each of the testing companies has their own proprietary matching method ... Read More
Avoidant Personality Disorder
Avoidant Personality Disorder is a personality disorder. It is marked by social isolation, fear of criticism, extreme shyness, and an inferiority complex ... Read More
Biogeography
Biogeography is the study of ecosystems in relationship to species and geography over geological time. It uses practices from biology, genetics, geography, and geology ... Read More
Birger Magnusson
Birger Magnusson, the Birger Jarl, was a leader in early Sweden. He lived from about 1210 to 1266 ... Read More
Borderline Personality Disorder
Borderline personality disorder is a personality disorder. It is marked by anxiety, fear of abandonment, self-loathing, and mood swings ... Read More
Buccal cell
A buccal cell is a cell from the lining in the human mouth. It is part of the body system that keeps the inside of our mouths moist. This system has a fast cell replacement time of about a day. Buccal cells are often used for DNA testing ... Read More
Cambridge Reference Sequence (CRS)
The revised Cambridge Reference Sequence is based on the first mitochondrial genome to be tested. The first version was published in 1981 ... Read More
CeCe Moore
CeCe Moore is a genetic genealogist. She works as an advocate for the field, as an unknown parentage researcher, and as a forensic genealogist. She works on the TV programs Finding Your Roots and Genealogy Roadshow ... Read More
Celebrity DNA
It is increasingly common for public figures and other famous people, celebrities, to DNA test. This is often done for TV shows such as Who Do You Think You Are and Finding Your Roots ... Read More
centiMorgan (cM)
A centiMorgan is the distance between two chromosome positions. One centiMorgan is the distance where the expected average number of intervening chromosomal crossovers in a single generation is 0.01 ... Read More
Cheddar Man
Cheddar man is the remains of a man who lived around 9,000 years ago in the British Isles. His remains were found in 1903 ... Read More
Cousin
A cousin is historically any member of your extended family. More recently, it is considered someone you share a known ancestor who is not part of your immediate family. Immediate family is your first degree relatives (parents and siblings), and your second degree relatives (grandparents, aunts, and uncles) ... Read More
DDC – A Gene
DDC is a human gene. It codes for an enzyme. The enzyme produces DOPA decarboxylase, Aromatic L-amino acid decarboxylase ... Read More
Dependent Personality Disorder
Dependent personality disorder (DPD) is a personality disorder. It is marked by dependence on social approval, fear of being alone, extreme helplessness, and sensitivity to criticism ... Read More
DNA replication
In humans DNA replication is the process of creating two copies of a DNA strand from one. It is an essential part of the cell replication process ... Read More
Dog DNA Testing Comparison Chart
Dog DNA testing is a relatively new science. Most tests currently focus on one or two genetic traits or very recent breed matching. This dog DNA Company Comparison Chart covers all major companies in the industry ... Read More
Endogamous
Endogamy is the social practice of only marrying within the social group. Cultures that practice endogamy have strict taboos against marriage outside of the group ... Read More
FamilyTreeDNA
FamilyTreeDNA is a direct to consumer testing company. They are located in the United States of America ... Read More
Finding Your Roots with Henry Louis Gates
Finding Your Roots with Henry Louis Gates Jr. is an American documentary style TV show. The host is historian Dr. Henry Louis Gate Jr. The first episode was shown Mar 25, 2012. So far, there have been four seasons of the program. A fifth season in 2019 is planned ... Read More
Fixation index (FST)
Fixation index is a statistic used in human population genetics. It is a measure of how alike or un-alike two or more groups of people are genetically ... Read More
Full Genomes Corporation
Full Genomes Corporation is a direct to consumer testing company. They are located in the United States of America ... Read More
Gene expression
Gene expression is how the information stored in a gene is used to create a genetic action. Most of the time, this is the creation of a protein. It may be the creation of RNA though. Sources & Resources Coming soon Questions & Answers Coming soon ... Read More
Gene family
A gene family is a set of genes that has similar function. They often are variants of a single gene in the distant past ... Read More
Genebase Systems
Genebase is a direct to consumer testing company. They are located in Canada. They offer mtDNA and Y-DNA tests ... Read More
Genetic determinism
Genetic determinism is the belief that human and thus individual behavior is predetermined by genetics alone ... Read More
Genetic distance
Genetic distance has three meanings in human genetics and genetic genealogy. It can mean the general amount of distance between two populations. It can be specific to a comparison between two mtDNA or Y-DNA haplotypes. It can also be a measure of the size of an autosomal or X-chromosome DNA ... Read More
Genetic drift
Genetic drift is the shift in frequency of genetic variants in a population due to random chance. This over time. It is more common in small isolated populations ... Read More
Genetic exceptionalism
Exceptionalism is the belief that something is set apart and not subject to the same set of rules. Genetic exceptionalism treats genetics as separate ... Read More
Genetic genealogist
A genetic genealogist is someone who specializes in the correct use of genetics to solve genealogy problems ... Read More
Genetic genealogy blogs
These are active blogs by members of the genetic genealogy and genomic citizen science community. To be considered active, the blog must have at least one post in the past year ... Read More
Genetic paternalism
Paternalism is acting for the good of others by taking away their right of choice. Genetic paternalism is taking away personal choices about genetic information. This is an ethical issue for medicine as well as genetic genealogy ... Read More
Genetics
Genetics is part of biology. Scientists in this field study how traits are passed from parent to child. People have known since prehistoric times that living things get traits from their parents. Early farmers used this to improve crop plants and animals. They used selective breeding ... Read More
Glacial Maximum
A glacial maximum is the peak point in an ice age. During the peak, the ice sheets reach their greatest size and temperatures are the coldest ... Read More
Half-Identical Region (HIR)
A half-identical region (HIR) is when two people share a DNA segment. The segment matches to one of the two chromosomes for each person. This is opposed to full matching where one or both people match all of the segment on both chromosomes in their chromosome pair ... Read More
Histrionic Personality Disorder
Histrionic personality disorder is a personality disorder. It is marked by attention seeking, strong opinions, easily influenced, obsessed with appearance, rapid emotion and mood shifts, and hyper-sexual behavior ... Read More
HTR2A – A Gene
HTR2A is a human gene. It codes for a serotonin related protein. The protein is 5-HT2A receptor ... Read More
HTR3A – A Gene
HTR3a is a human gene. It codes for a protein. The protein is 5-hydroxytryptamine receptor 3A. This is a transmitter. It is important for brain function ... Read More
Indigenous peoples of the Americas
The indigenous peoples of the Americas are the people who lived here before the arrival of European explorers. Sometimes researchers call them pre-Columbian ... Read More
Indigenous peoples of the Americas – Genetics
The indigenous peoples of the Americas brought with them a distinctive set of genetic lineages from Eastern Eurasia. These are studied in ancient and modern DNA to expand the first people's story ... Read More
Kennewick man – Ancient DNA of North America
Kennewick Man is the remains of a man who lived in early North America. He lived about 9,000 years ago ... Read More
Living DNA – A DNA Testing Company
Living DNA is a direct to consumer testing company. They are located in the United Kingdom ... Read More
Markina Gora skeleton
The Markina Gora skeleton are the human remains of a Russian male. He lived around 35,000 years ago. His grave was found at the Kostenki site ... Read More
Molecular anthropology
Molecular anthropology is the study of anthropology using molecular traits. Molecular traits include blood groups, DNA, and immune system function ... Read More
mtDNA Company Comparison Chart
The number of DNA testing companies is growing. Mitochondral DNA (mtDNA) testing for direct maternal lineages remains the most reliable way to establish evidence of a relationship between two people who share a female ancestor in the most recent fifteen generations ... Read More
mtDNA Testing for Genetic Genealogy
An mtDNA test (mitochondrial DNA test) is used for maternal genealogy. MtDNA is passed from a mother to her children. Thus, it traces a direct maternal line. Both men and women can take mtDNA tests ... Read More
MTNR1A – A Gene
MTNR1A is a human gene. It codes for a protein. This particular protein is one of two that are receptors for melatonin ... Read More
MTNR1B – A Gene
MTNR1B is a human gene. It codes for a protein. This particular protein is one of two that are receptors for melatonin ... Read More
Mummy Juanita
The mummy Juanita is the remains of a young Inca girl. They were frozen and naturally mummified. She was killed as part of a religious ceremony ... Read More
Narcissistic Personality Disorder
Narcissistic personality disorder is a personality disorder. It is marked by need for undeserved admiration, callousness, intolerance of criticism, entitlement, and avoidance of vulnerability ... Read More
Nicholas II of Russia and family
Nicholas II of Russia was the last emperor of the Russian Empire. He was forced to abdicate in 1917. Later in 1918, he and his family was murdered ... Read More
Obsessive-Compulsive Personality Disorder
Obsessive-compulsive personality disorder is a personality disorder. It is marked by obsessive rule following, obsessive list making, debilitating perfectionism, work obsession, moral inflexibility, and stubbornness ... Read More
On Your Knees Cave & Shuká Káa
On Your Knees Cave is the site of Native American artifacts and human bones. It is located on Prince of Wales Island. That is off the coast of southeastern Alaska ... Read More
Oseberg ship remains
The Oseberg ship is a Viking ship. It was found in a burial mound in Norway ... Read More
Ötzi the Iceman
Ötzi the Iceman is a mummy of a man who lived between 3400 and 3100 BCE. His body was found frozen in the Alps ... Read More
Oxford Ancestors – A DNA Testing Company
Oxford Ancestors is a direct to consumer testing company. They are located in the United Kingdom ... Read More
Paranoid Personality Disorder
Paranoid personality disorder is a personality disorder. It is marked by social distrust, emotional coldness, unforgiving, and sensitivity to criticism ... Read More
Pedigree chart
A pedigree chart is a diagram that shows the relationships in a family. It can be used to show cultural, genetic, and genealogical features for members of the family. Pedigree charts are used in genetics, genealogy, medicine, and psychology ... Read More
Personality Disorders
Personality disorders are patterns of thinking. They are patterns of thinking, feeling, and behaving that are unlike the typical patterns for the culture in which someone is raised ... Read More
Prehistory
Prehistory is the part of human history before recorded writing. It begins many thousands of years ago. Because it ends with written history, the end date is different around the world ... Read More
Ramesses III
Ramesses III was a Pharaoh of Egypt. He was the son of Setnakhte and Queen Tiy-Merenese ... Read More
Restriction enzyme
A restriction enzymes break DNA into parts. Each enzyme does this at a specific point in DNA ... Read More
Schizoid Personality Disorder
Schizoid personality disorder is a personality disorder. It is marked by social isolation, indifferent to praise, lack of close friends, limited range of emotions, reduced sex drive, and relationship avoidance ... Read More
Schizotypal Personality Disorder
Schizotypal personality disorder is a personality disorder. It is marked by severe social anxiety, thought disorder, paranoid ideation, derealization, and transient psychosis ... Read More
SLC6A4 – A Gene
SLC6A4 is a human gene. It codes for a serotonin transporter protein ... Read More
SLC7A5 – A Gene
SLC7A5 is a human gene. It codes for a protein. The protein is expressed to the highest degree in our lungs and our livers ... Read More
Sweyn II of Denmark
Sweyn II Estridsson, King of Denmark, ruled from 1047 until his death in 1076. He was born around 1019 to Ulf Thorgilsson and Estrid Svendsdatter ... Read More
Time to the Most Recent Common Ancestor (TMRCA)
The time to the most recent common ancestor in genealogy and population genetics is the number of generations between two or more people in a population and their common ancestor. Sources & Resources Most recent common ancestor - WikipediaEstimating time to the most recent common ancestor (TMRCA) - NCBI ... Read More
TPH2 – A Gene
Tryptophan hydroxylase 2 (TPH2) is a human gene. It codes for an isozyme. This is a type of enzyme. In humans, TPH2 is mainly expressed in our brains ... Read More
Transcription
In human genetics, transcription is part of the gene expression process. In transcription, RNA polymerase reads DNA ... Read More
Tutankhamun
Tutankhamun, King Tut,was an Egyptian pharaoh. He ruled about 1332 to 1323 BCE ... Read More
X-chromosome
The X-chromosome is one of the two human sex chromosomes. These are the chromosomes that code for sexual traits ... Read More
X-DNA Company Comparison Chart
X-chromosome DNA (X-DNA) for genealogy is usually used alongside autosomal DNA. However, its unique inheritance pattern is key to specific types of genealogy matching ... Read More
Y-chromosome
In human genetics, the Y-chromosome is the male sex chromosome. It contains most of the genes that related to male sexual anatomy ... Read More
Y-chromosome DNA haplogroup
Y-chromosome DNA (Y-DNA) Haplogroups are the branches of the male tree of humans. This human tree reaches back to the earliest people. It even reaches back before there were humans ... Read More
Y-DNA Haplogroup Projects at FamilyTreeDNA
Y-DNA Haplogroup projects are one of the three types of DNA projects that all Y-DNA tested men should consider joining. Most people join them after receiving their Y-DNA test results, as you need to know your tested or predicted Y-DNA haplogroup before you join ... Read More
Y-DNA Testing for Genetic Genealogy
Y-chromosome DNA, Y-DNA, testing for genetic genealogy is both the second most common type of DNA testing for genealogy and the second type of DNA test to be used in academics to study population histories ... Read More
Young Man of Byrsa
The Young Man of Byrsa or Ariche is the remains of a man who lived in Carthage in the 6th century BCE. His remains have been DNA tested ... Read More
YSeq – A DNA Testing Company
YSeq is a direct to consumer DNA testing company. They are located in Germany ... Read More