Mississippi Science GEN.2B
Standard Cluster
Students will determine the causes and effects of mutations in DNA. Identify factors that cause mutations (e.g., environmental, errors in replication, and viral infections). Explain how these mutations may result in changes in protein structure and function. Describe cellular mechanisms that can help to minimize mutations (e.g., cell cycle checkpoints, DNA polymerase proofreading, and DNA repair enzymes). Investigate the role of mutations and the loss of cell cycle regulation in the development of cancers. Enrichment: Use an engineering design process to research the current status of genetic technology and personalized medicine, then propose and test targeted medical or forensic applications. *
2026 Mississippi College- and Career-Readiness Standards for Science · Transcription, Translation, and Mutations
Cluster contents
Standards in This Cluster
GEN.2B is a cluster heading. These are the individual standards under it.
- GEN.2B.1
Identify factors that cause mutations (e.g., environmental, errors in replication, and viral infections).
- GEN.2B.2
Explain how these mutations may result in changes in protein structure and function.
- GEN.2B.3
Describe cellular mechanisms that can help to minimize mutations (e.g., cell cycle checkpoints, DNA polymerase proofreading, and DNA repair enzymes).
- GEN.2B.4
Investigate the role of mutations and the loss of cell cycle regulation in the development of cancers.
- GEN.2B.5
Enrichment: Use an engineering design process to research the current status of genetic technology and personalized medicine, then propose and test targeted med...
Teacher's field guide
What This Cluster Means
What Students Need to Do
- Students identify how copying mistakes, UV light, chemicals, and some viruses can change DNA. They use a codon chart to trace a DNA change through mRNA to a protein. They explain how proofreading, repair, and cell cycle checkpoints limit damage.
What Mastery Looks Like
- Given a DNA change, a student can tell whether it changes an amino acid and explain how that might affect the protein's job. They can explain how a damaged checkpoint gene may let cells keep dividing and form a tumor.
Common Misconceptions
- Students often think every DNA change alters a protein or causes cancer. Some think proofreading catches UV damage, or that checkpoints repair DNA themselves.
How to Assess It
- Exit ticket: A copying mistake changes a DNA coding strand from 5'-ATG GAA TTT TAA-3' to 5'-ATG GTA TTT TAA-3'. Use a codon chart to name the amino acid change, explain one possible effect on the protein, and name a way the cell could catch the mistake.
Lesson moves
Ways to Teach It
Give pairs paper DNA strips and a codon chart; have them swap one base, transcribe both sequences, and compare amino acids.
Ask students to write a response: Why could UV damage to a checkpoint gene raise cancer risk when many DNA changes do not?
Play repair-or-escape cards: students match copying mistakes, UV damage, and failed checkpoints to a prevention step or possible outcome.
Give students a mock tumor report showing a BRAF mutation and a drug chart; have them explain which treatment matches the report.
Keep exploring
Related Standards
- GEN.1B
Students will analyze how the DNA sequence is copied and transmitted to new cells.
- GEN.1A
Students will demonstrate that all cells contain genetic material in the form of DNA.
- BIO.3C
Students will construct an explanation based on evidence to describe how the structure and nucleotide base sequence of DNA determines the structure of proteins ...
- FB.4
Students will demonstrate an understanding of how genetic information is transferred from parent to offspring.
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