DNA

Question 1

facts

Answer 1

• deoxyribonucleic acid
• 1962, most important biological discovery of century - Watson and Crick
• Chromosomes-molecules DNA-contain genes

Question 2

structure of DNA

Answer 2

• twisted ladder
• made of nitrogen bases
• replication: exact copies
• AT (adenine and thymine) = spell the word at
• CG (cytosine and guanine) = look alike

Question 3

DNA replication

Answer 3

• DNA nucleus duplicates or replicates
• ladder separates or unzips
• floating bases attach
• each base attaches and a new DNA is formed

Question 4

DNA review

Answer 4

• carries genetic information
• nucleic acid
• important discovery
• replicates to make 2 new cells