How genetically different are different people?

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In summary, the genetic difference in humans is relatively small due to the young age of the species and the sharing of genetic changes through global travel. This is evidenced by the fact that humans have 1 variation on 1000 base pairs, while chimpanzees have 1 in 500 base pairs. Additionally, people generally share 99.9% of their genes with others, regardless of ethnicity or geographical location.
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wasteofo2
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I'm curious about how many genetic differences there are between different types of people. For instance, is there some measure of genetic standard deviation within the human population, and simmilar such things for smaller populations of humans? How great would be the genetic difference between two people from southern Italy, whose ancestors have lived there for hundreds of generations, compared to one person from southern Italy, and another from Japan, whose ancestors have also been living in Japan for hundreds of generations?

Thanks alot,
Jacob
 
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  • #2
Genetic difference in humans is small. Homo sapiens is relatively young so they are all very related. Plus with technology that allows traveling all around the world the changes that did evolve get shared by people all over the world by people of different ethnicities getting children.

Humans have 1 variation on 1000 base pairs. Chimps have 1 in 500 base pairs.

People generally share 99.9 of their genes with everyone else.
 
  • #3


The genetic differences between individuals can vary greatly, as each person inherits a unique combination of genes from their parents. It is estimated that humans share about 99.9% of their DNA, but the remaining 0.1% can account for significant variations in physical characteristics and predispositions to certain diseases.

There is no specific measure of genetic standard deviation within the human population, as it can vary depending on the specific genes being studied. However, studies have shown that there is more genetic variation within a single population than between different populations. This means that two people from the same region, such as southern Italy, can still have significant genetic differences.

In terms of comparing two individuals from different regions, such as southern Italy and Japan, there may be greater genetic differences due to the fact that their ancestors have been living in separate geographic locations for hundreds of generations. However, it is important to note that genetic variation can also occur within a population over time, so it is possible for two individuals from the same region to have more genetic differences than two individuals from different regions.

Overall, the extent of genetic differences between individuals and populations is complex and can vary greatly depending on multiple factors. While genetics plays a significant role in determining physical characteristics and predispositions to certain diseases, it is also important to consider other factors such as environmental influences and lifestyle choices.
 

1. How do genes make people different?

Genes are segments of DNA that contain instructions for making proteins, which are essential for the structure and function of our bodies. Each person has a unique combination of genes inherited from their parents, which can result in differences in physical traits, such as eye color, hair color, and height. Additionally, genes can also influence our susceptibility to certain diseases and how we respond to environmental factors.

2. Are there any genetic differences among different races?

While there are genetic differences among different populations, these differences are relatively small and do not align with traditional racial categories. The concept of race is a social construct and does not have a biological basis. Studies have shown that there is more genetic variation within racial groups than between them, and people of the same race can have more genetic differences than people of different races.

3. How much of our genetics is determined by our environment?

Our genetics and environment both play important roles in shaping who we are. While our genes provide the blueprint for our bodies, our environment can influence how our genes are expressed. For example, exposure to certain environmental factors, such as diet and lifestyle, can impact the expression of our genes and contribute to differences among individuals.

4. Can genetic differences impact behavior and intelligence?

There is no single gene that determines behavior or intelligence. These traits are complex and influenced by a combination of genetic and environmental factors. While certain genetic variations may be associated with certain behaviors or intelligence levels, it is important to note that there is no such thing as a "smart" or "good" gene. Our environment and experiences also play a significant role in shaping our behavior and intelligence.

5. How does genetic diversity impact the human population?

Genetic diversity is crucial for the survival and adaptation of a species. It allows for the development of new traits and the ability to adapt to changing environments. In humans, genetic diversity helps to prevent the spread of diseases and allows for the development of new medical treatments. It also contributes to the uniqueness and diversity of individuals, making each person special in their own way.

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