DNA Review

Mutations can be...

• Harmful

• Beneficial

• Neutral

• All of the Above

Mutations are...

• Changes in the sequence of DNA

• Broken chromosomes

• Bad genes

What is a type of Mutation?

• Deletions

• Insertions (additions)

• Base Substitutions

• All of the Above

Mutations can be a result of...

• Environmental Exposure

• Lack of sleep

• Not enough exercise

What mutation has occurred here? 
T-G-A-C-C-A
T-G-A-G-C-A

• Substitution
• Deletion
• Insertion
• Frameshift 

Original: ATC CAT
Mutation: ATC GCAT
What mutation occurred?

• deletion
• insertion
• silent
• transverse

Abnormal red blood cells that result in oxygen deficiency

• Sickle cell anemia

• Phenylketonuria

• Tay-Sachs Disease

• Muscular Dystrophy

The enzyme that unwinds the DNA to prepare for replication

• helicase
• replicase
• polymerase
• synthase

DNA replication results in two DNA molecules,

• each one with two original strands
• each one with two new strands
• each one with one new strand and one original strand
• one with two new strands and the other with two original strands

Adenine bonds with ______________.

• Guanine
• Thymine
• Cytosine
• Adenine