How does DNA store and transmit genetic information?

DNA is like a super-cool instruction book that lives inside every living thing and tells it how to grow and work.

DNA stands for deoxyribonucleic acid, but you don’t need to remember that, just think of it as the special kind of message passed from parents to kids. It’s made up of genes, which are like tiny sentences in the book, telling your body what to do.

How DNA stores information

Imagine your favorite toy has a secret message inside it, that's kind of how DNA works! Inside every cell, there are long strings called chromosomes (like really long ribbons), and these hold all the messages. Each part of the ribbon is made up of smaller pieces called bases, which pair up like best friends: A with T, and C with G. These pairs make sure the message stays correct when it gets copied.

How DNA sends information

When you grow up, your body uses the instructions from DNA to build new cells, kind of like copying a recipe so you can bake more cookies. When you have babies, you pass some of your DNA to them, which is how they end up looking like you (or maybe like your mom or dad instead!).

DNA is like a never-ending storybook that helps every living thing grow and change, and it’s all written in code!

Take the quiz →

Examples

  1. A child inherits eye color from their parents through DNA
  2. DNA is like a recipe book passed down through generations
  3. Cells copy DNA before dividing to ensure each new cell gets the full set of instructions

Ask a question

See also

Discussion

Recent activity

Categories: Biology · DNA· genetics· cell division