When you build a house,you use a blueprint. What's a blueprint? In general,a blueprint is a drawing that shows how to put a house together with many different parts.DNA is the blueprint of life.
But building a living thing is far more complex than building a house.It takes millions of years for nature to change the DNA in living things to make them fit the world they live in.
How tall are you? What colour are your eyes? What size are your feet?All these things are strongly influenced by your DNA before you are born!
DNA is fantastic!
·Except for some twins,every living thing has its own unique DNA.
·Some health problems can be caused by problems in your DNA.Scientists can look for these problems and, sometimes, help you before you become sick. In the future, scientists might be able to change your DNA.
·There are copies of your DNA in every part of your body.For example,your finger has the same DNA as your hair.
·You have your own unique DNA,but it repeats patterns from your parents' DNA.From your DNA,scientists can identify not only you,but also people who are related to you.Your parents and grandparents are related to you,and you have their DNA.When you have a grandson or granddaughter, he or she will have your DNA.
Your DNA has billions of instructions that explain why you are the way you are.It's one of the most amazing things on the earth!