3. Scientists can use DNA to make sick people well.         _____

What does DNA stand for? Listen and read to find out. (DNA viết tắt cho chữ gì? Nghe và đọc để tìm hiểu.)

DNA – The Blueprint of Life

DNA is one of the most important things in all living creatures. But what is it exactly? And why is it so important?

DNA, short for deoxyribonucleic acid, is the molecule that contains the genetic code of organisms.

Our DNA contains all the genetic details that make us what we are. Instructions for how our cells grow and work are all inside our DNA. So DNA is a kind of instruction book for how we look.

We have forty-six chromosomes in our bodies, twenty-three from each of our parents, which join together to make pairs. The discovery of chromosomes has been one of the biggest and most important scientific discoveries in human history.

Scientists study DNA for lots of reasons. It can help them understand and treat diseases, genetically modify or improve food, identify people from hair or blood samples, and even create new life through technology like cloning (an identical copy of a plant or animal).

By understanding our DNA and the information inside it, we can understand a lot about ourselves and our health. For example, we can see if we might get certain health problems or illnesses, and we can change our lifestyles to avoid them.

The secrets inside DNA are the key to all life. The more we learn about them, the more we learn about ourselves and the world around us!

2. Why do scientists study DNA?

4. They can use DNA to create human clones.                   _____