Blog#13 How has DNA changed how we investigate crimes?

l think DNA is a very helpful and important invention,especially make the police and decteive to find out the crimal easily.lf there is a careless robber left their blood in the crime scene.Then,it's possible to have a investigation on that blood.We can find the unique DNA from it.Consequently,we can find the truely robber easily a lot than before.Also,even if the murder left a small hair,we can also find out who's DNA is it.Like in the movie,Vincent's one litttle hair has all of the DNA,and it's a very important clue in that movie.However,the invention of DNA help a lot in the crimes.We don't really need a lot of wisdom people like Selock Homes.We can easily find out who is the final murder depend on one modern evidence:DNA!