3.1 DNA Slides

It stores genetic information that determines traits

It provides energy for cellular activities

It helps organisms move

It protects cells from viruses

Because all living organisms have DNA and the sequence of DNA determines traits.

Because bananas and humans are closely related species.

Because humans eat bananas, so their DNA mixes.

Because DNA is only found in plants and humans.

Rosalind Franklin

James Watson

Francis Crick

Gregor Mendel

Sugar

Phosphate

Nitrogen Base

Amino Acid

Phosphate groups and deoxyribose sugars

Nitrogenous bases and hydrogen bonds

Adenine and thymine

Guanine and cytosine

They make up the inside of the double helix

They are held together by hydrogen bonds

There are four types: adenine, thymine, guanine, cytosine

They form the backbone of DNA

Helicase

Polymerase

Ligase

Primase

One old strand and one new strand

Two old strands

Two new strands

One strand of RNA and one strand of DNA

A pairs with T, C pairs with G

A pairs with C, T pairs with G

A pairs with G, C pairs with T

A pairs with A, T pairs with T

The percentage of A equals the percentage of T

The percentage of C equals the percentage of G

The percentage of A equals the percentage of G

The percentage of T equals the percentage of C

60%

30%

70%

50%