Deoxyribonucleic Acid

DNA

DNA…• … is the blueprints or instructions for all living things.

• … has the same basic structure for all living things

• … belongs to a group of complex molecules known as Nucleic Acids.

All nucleic acids including DNA are composed of Nucleotides

•Nucleotides

What DNA is made of?

Nucleotides

• There are four different kinds of bases– Adenine– Thymine– Guanine– Cytosine

Nucleotides• Nucleotides combine to form DNA chains

A to T, C to G rule

• Adenine always combines with Thymine

A-T• Guanine always combines with

Cytosine

C-G

DNA Ladder

Who discovered it

They didn’t do it alone

How did they do it?

DNA Ladder

How does it copy

DNA ladder unzips

Free floating Nucleotides connect

Two New Strands