Is DNA of all human beings same?Then what makes us different?

Question

Plz pass on detail information, a kinda website or so...

Answer 1

Well, the essential elements of the DNA, as well as its organization are the same, but slight variations, as well as differential expression of those sequences are what make us different. Beyond that, environmental influences on development -- diet, exercise, exposure to certain elements, etc, also have a lot to do with making each one of us an individual

Answer 2

The differences between the DNA sequences of most higher organisms are quite slight. Most mammals have similarities in the high 90% range. For us and chimps, for example, we have a similarity of 99.99999% (five nines after the decimal.) For you and any other human, it's 99.999999999% (nine nines after the decimal). If only the portions of your DNA that code for proteins are considered, it would be twenty nines after the decimal.

There is more genetic variation in a single troop of chimpanzees than in all the breeds of man. There is so much similarity that if you take a sample of DNA to a scientist and say "what race is this person" they will most likely say "I can't tell". The only distinguishing factors might be certain genetic disorders that are prevalent in certain populations, such as sicle-cell anemia or tay-sachs.

Answer 3

only very minor differences make us different from each other. Our DNA is over 95% the same as Chimp DNA. So the difference between any two humans is much less and family members are nearly identical. However even among identical twins, there are a few differences.

Answer 4

It is nearly all the same with very minor differences. We share nearly all our DNA with Chimpanzees and most with a mouse. A small amount of change in the DNA can make some pretty profound changes in appearance.

Answer 5

There's just minor differences, though some are obvious such as skin colour.

However I recall that one man did a study of genetics, with certain markers used to tell if people were from say Europe, Africa, Asia etc. One neat thing he found is that some black people from the USA are mostly European genetically.

Answer 6

We have different alleles at each locus. These are the variations among genes. But we essentially all have the same genes. There are an estimated 20,000 to 30,000 genes in humans.