Thanks to population genetics, we are becoming increasingly aware of just how mixed our ancestry really is. The old stereotypes about ethnic purity are meaningless when we think in term of genetic admixtures and deep ancestry spanning over 10,000 years or more.
Yet, ethnic groups still exist and most of us identify with one or several of them. This is because an ethnicity does not require a unique unblended ancestry, but can, and usually is the result of millennia of intermingling in one region. For example, the Germanic ethnicity originated in Scandinavia and North Germany from the admixture of Mesolithic (Ertebølle), Neolithic (Funnelbeaker), Bronze Age (Corded Ware) and Iron Age migrants to the region. As Germanic people later expanded over most of Europe, a lot of Europeans can claim partial Germanic ancestry in addition to other regional ancestry (Celtic, Roman, Greek, Slavic, etc.)
The development of genetic admixtures over the last few years made us realise that most of us have fragments of DNA inherited from ancestors of completely different ethnicities. It is rather common for Europeans to find segments of East Asia, South Asia or East African ancestry in their DNA. And all Europeans have varying shares of Middle Eastern ancestry (which can be subdivided in Anatolian, Caucasian, Mesopotamian, Gedrosian, Southwest Asian, among others).
But just how much ancestry do you feel you need to be able to claim to belong to an ethnic group. This is a question that Americans will surely have thought about more often than Europeans, since Americans (not just from the USA, but the whole Americas) most often have (very) mixed ancestry. That's not a coincidence that ancestry DNA tests were pioneered for the North American market first. Many White Americans, who might pass for "pure Europeans" found out, often to their own surprise that they have a small amount of Native American or African ancestry. Now Europeans can be as surprised to realise that they are not so pure and can also have between 0.1% and 5% of Siberian, or South Asian or African DNA, even if they have red hair, freckles and blue eyes. Looks can be deceptive, as only a small part of our genome has an influence on physical appearance.
We have recently debated the possibility of African immigrants outbreeding Europeans, and that made me wonder about the issue of genetic continuity and the sense of belonging. It is obvious that a child with a European parent and an African one will feel both European and African. One's genetic identity is always clear for the first generation of mixed race children. It gets more complicated after 3, 4 or 5 generations.
Would a child with one European great-grand-parent and 7 African ones feel both ethnically European and African, or just African ? What if it was 1 European ancestor out of 256 (8th generation), amounting theoretically to a mere 0.003% of his/her genome (but perhaps even less) ?
Although all my ancestors as far as my genealogy can go back are European, I tried to imagine what proportion of ancestors of one ethnicity I would need to feel that I can reasonably claim that I partially belong to that group. After some consideration, I thought that 10% was a reasonable amount. That is roughly equivalent to one great-grand-parent (theoretically 12.5%, but we inherit more from some and less from others, so between 10% and 15% from any in average). When I look at my admixtures, I usually feel that 10% is the threshold to which one ethnic/regional category becomes relevant to my identity.
Interestingly, great-grand-parents are also generally the most remote ancestors that we will ever know and remember (very few people have the chance to meet a great-great-grand-parent, and even less to be old enough to remember them). Most people who are not genealogists will also know their grand-parents' names and (hopefully) their great-grand-parents' names, but rarely beyond that. It has also been calculated that the emotional attachment between relatives is only meaningful until the degree of great-grand-parent to great-grand-child, or first cousin (who are the equivalent of a great-grand-parent in genetic distance, also sharing a theoretical 12.5% of DNA with us).
I am interested to know how others feel about this, to see if we all feel more or less the same way, or if there are big interpersonal divergences.
Yet, ethnic groups still exist and most of us identify with one or several of them. This is because an ethnicity does not require a unique unblended ancestry, but can, and usually is the result of millennia of intermingling in one region. For example, the Germanic ethnicity originated in Scandinavia and North Germany from the admixture of Mesolithic (Ertebølle), Neolithic (Funnelbeaker), Bronze Age (Corded Ware) and Iron Age migrants to the region. As Germanic people later expanded over most of Europe, a lot of Europeans can claim partial Germanic ancestry in addition to other regional ancestry (Celtic, Roman, Greek, Slavic, etc.)
The development of genetic admixtures over the last few years made us realise that most of us have fragments of DNA inherited from ancestors of completely different ethnicities. It is rather common for Europeans to find segments of East Asia, South Asia or East African ancestry in their DNA. And all Europeans have varying shares of Middle Eastern ancestry (which can be subdivided in Anatolian, Caucasian, Mesopotamian, Gedrosian, Southwest Asian, among others).
But just how much ancestry do you feel you need to be able to claim to belong to an ethnic group. This is a question that Americans will surely have thought about more often than Europeans, since Americans (not just from the USA, but the whole Americas) most often have (very) mixed ancestry. That's not a coincidence that ancestry DNA tests were pioneered for the North American market first. Many White Americans, who might pass for "pure Europeans" found out, often to their own surprise that they have a small amount of Native American or African ancestry. Now Europeans can be as surprised to realise that they are not so pure and can also have between 0.1% and 5% of Siberian, or South Asian or African DNA, even if they have red hair, freckles and blue eyes. Looks can be deceptive, as only a small part of our genome has an influence on physical appearance.
We have recently debated the possibility of African immigrants outbreeding Europeans, and that made me wonder about the issue of genetic continuity and the sense of belonging. It is obvious that a child with a European parent and an African one will feel both European and African. One's genetic identity is always clear for the first generation of mixed race children. It gets more complicated after 3, 4 or 5 generations.
Would a child with one European great-grand-parent and 7 African ones feel both ethnically European and African, or just African ? What if it was 1 European ancestor out of 256 (8th generation), amounting theoretically to a mere 0.003% of his/her genome (but perhaps even less) ?
Although all my ancestors as far as my genealogy can go back are European, I tried to imagine what proportion of ancestors of one ethnicity I would need to feel that I can reasonably claim that I partially belong to that group. After some consideration, I thought that 10% was a reasonable amount. That is roughly equivalent to one great-grand-parent (theoretically 12.5%, but we inherit more from some and less from others, so between 10% and 15% from any in average). When I look at my admixtures, I usually feel that 10% is the threshold to which one ethnic/regional category becomes relevant to my identity.
Interestingly, great-grand-parents are also generally the most remote ancestors that we will ever know and remember (very few people have the chance to meet a great-great-grand-parent, and even less to be old enough to remember them). Most people who are not genealogists will also know their grand-parents' names and (hopefully) their great-grand-parents' names, but rarely beyond that. It has also been calculated that the emotional attachment between relatives is only meaningful until the degree of great-grand-parent to great-grand-child, or first cousin (who are the equivalent of a great-grand-parent in genetic distance, also sharing a theoretical 12.5% of DNA with us).
I am interested to know how others feel about this, to see if we all feel more or less the same way, or if there are big interpersonal divergences.