The structure of DNA is really fascinating! It plays an important role in how we get different traits. Let’s break it down into simpler parts:
DNA is made up of small parts called nucleotides.
Each nucleotide has three main parts:
The order of these bases is what holds our genetic information.
When the sequence changes a little, it can create different traits or characteristics in living things.
DNA has a famous shape called a double helix.
This twisty shape helps keep the genetic information safe and organized.
It allows DNA to fit neatly into structures called chromosomes, which are really important when cells divide.
The bases pair up in a specific way: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
This pairing helps to make sure that any changes are copied correctly. But sometimes, mistakes can happen, leading to different traits.
Humans have 23 pairs of chromosomes.
Different genes on these chromosomes create the variety we see in people.
For example, some people can digest lactose, while others cannot, because of their specific gene sequences.
In conclusion, the way DNA is built—with nucleotides making a double helix and forming chromosomes—shapes genetic variation. This variation is really important for evolution and how living things adapt to different places!
The structure of DNA is really fascinating! It plays an important role in how we get different traits. Let’s break it down into simpler parts:
DNA is made up of small parts called nucleotides.
Each nucleotide has three main parts:
The order of these bases is what holds our genetic information.
When the sequence changes a little, it can create different traits or characteristics in living things.
DNA has a famous shape called a double helix.
This twisty shape helps keep the genetic information safe and organized.
It allows DNA to fit neatly into structures called chromosomes, which are really important when cells divide.
The bases pair up in a specific way: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).
This pairing helps to make sure that any changes are copied correctly. But sometimes, mistakes can happen, leading to different traits.
Humans have 23 pairs of chromosomes.
Different genes on these chromosomes create the variety we see in people.
For example, some people can digest lactose, while others cannot, because of their specific gene sequences.
In conclusion, the way DNA is built—with nucleotides making a double helix and forming chromosomes—shapes genetic variation. This variation is really important for evolution and how living things adapt to different places!