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How do external factors change an organism's genes to affect their offspring? Lecture 2: Environmental factors, such as radiation, can cause mutations.

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Presentation on theme: "How do external factors change an organism's genes to affect their offspring? Lecture 2: Environmental factors, such as radiation, can cause mutations."— Presentation transcript:

1 How do external factors change an organism's genes to affect their offspring?
Lecture 2: Environmental factors, such as radiation, can cause mutations in DNA. Radiation can cause changes in the operon or section of genes. This may cause frame-shift and point mutations. The repressor that binds to the operator may be mutated to express the mutated genes. Terms of Use: Mutation, Frameshift mutation, Point Mutation Operator, Repressor, Operon

2 Concept Map Mutation Frame-shift Mutation Point Mutation Operon
From radiation Frame-shift Mutation Point Mutation Miss pairing of one base Insertion and deletion of bases Operon Operator A series of genes Repressor Repressor binds and stops protein production Turns Genes OFF

3 How did this Happen?

4 Effects of Radiation on DNA

5 Gene Regulation

6 Drawing and Labels

7 Primary Investigation
Write the question and answer in a complete sentences Q1. How does radiation affect DNA? A1. Q2. How do shifts in the DNA change the proteins made? A2. Q3. How can a mutation in the repressor cause uncontrolled expression of the operon? A3.

8 Exit Slip How are mutations caused by environmental factors?
Write the question and answer in a complete sentence How are mutations caused by environmental factors? Claim (How): Evidence (Why): Example (What):

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