DNA STRUCTUREPage 289

p. 289_______________ – a special virus that infects bacteria - attaches to a bacteria cell and eats its genetic information then ____________________________________to make “clones” of itself.

p. 289Bacteriophage – a special virus that infects bacteria - attaches to a bacteria cell and eats its genetic information then _____________________________________to make “clones” of itself.

p. 289Bacteriophage – a special virus that infects bacteria - attaches to a bacteria cell and eats its genetic information then replaces it with its own genetic information to make “clones” of itself.

p 291 _______ – _________________________________________

- ___________ genetic information ______________genetic information from parents to offspring

p 291 DNA – Deoxyribonucleic Acid

-________genetic information - _______ genetic information from parents to offspring

p 291 DNA – Deoxyribonucleic Acid

- stores genetic information -___________genetic information from parents to offspring

p 291 DNA – Deoxyribonucleic Acid

- stores genetic information - passes genetic information from parents to offspring

DNA is made up of _____________

DNA is made up of Nucleotides.

Nucleotide

Each Nucleotide has 3 parts: 1. ___________________2. ___________________3. ___________________

Each Nucleotide has 3 parts: 1. Phosphate group 2. Deoxyribose – sugar____3. Nitrogen base - proteins

4 nitrogen bases1. ___________________2. ___________________3. ___________________4. ___________________

4 nitrogen bases1. Adenine2. Thymine3. Cytosine4. Guanine

Phosphate Group + Deoxyribose make up the ____________Bases make up the ______of the ladder

4 nitrogen bases1. Adenine2. Thymine3. Cytosine4. Guanine

Phosphate Group + Deoxyribose make up the ____________Bases make up the ______of the ladder

4 nitrogen bases1. Adenine2. Thymine3. Cytosine4. Guanine

Phosphate Group + Deoxyribose make up the backboneBases make up the _______of the ladder

4 nitrogen bases1. Adenine2. Thymine3. Cytosine4. Guanine

Phosphate Group + Deoxyribose make up the backboneBases make up the steps of the ladder

Bases are paired and held together by ________________(H-bonds).

Adenine pairs with __________________Cytosine pairs with __________________

Bases are paired and held together by Hydrogen Bonds (H-bonds).

Adenine pairs with __________________Cytosine pairs with __________________

Bases are paired and held together by Hydrogen Bonds (H-bonds).

Adenine pairs with Thymine Cytosine pairs with __________________

Bases are paired and held together by Hydrogen Bonds (H-bonds).

Adenine pairs with Thymine (A-T)Cytosine pairs with Guanine (G-C)

A T G C T T A G C C A G C T A G C

A- T -G -C -T- T -A -G -C- C- A- G- C- T -A -G- C-

TACGAATCGGTCGATCG

_______ – Adenine and Guanine – have 2 rings

____________ – Cytosine and Thymine-have one ring

Purines – Adenine and Guanine – have 2 rings

___________ – Cytosine and Thymine-have one ring

Purines – Adenine and Guanine – have 2 rings

Pyrimidines – Cytosine and Thymine-have one ring

The shape of DNA is called the __________. It looks like a _____________.

The Double Helix ______ DNA and makes it more ____________ so that it _____________________.

The shape of DNA is called the Double Helix. It looks like a ____________________.

The Double Helix ______ DNA and makes it more __________so that it ______________________.

The shape of DNA is called the Double Helix. It looks like a spiral staircase.

The Double Helix ______ DNA and makes it more __________ so that it _____________________.

The shape of DNA is called the Double Helix. It looks like a spiral staircase.

The Double Helix twists DNA and makes it more __________ so that it _____________________.

The shape of DNA is called the Double Helix. It looks like a spiral staircase.

The Double Helix twists DNA and makes it more compact so that it _____________________.

The shape of DNA is called the Double Helix. It looks like a twisted ladder.

The Double Helix twists DNA and makes it more compact so that it fits into the nucleus

_______________________________– scientists who discovered the double- helix shape of DNA

James Watson and Francis Crick – scientists who discovered the double- helix shape of DNA