

8.7 Genetic Mutations and Their Effects
Flashcard
•
Science
•
5th Grade
•
Practice Problem
•
Easy
Sana Sabra
Used 1+ times
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5 questions
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1.
FLASHCARD QUESTION
Front
Explain why frameshift mutations have a greater effect than do point mutations.
Back
Point mutations typically affect only one codon (unless they create a premature stop codon). A frameshift mutation affects all the codons in a gene that follow it.
2.
FLASHCARD QUESTION
Front
If GUA is changed to GUU, will the resulting protein be affected? Explain.
Back
No, both GUA and GUU code for the amino acid valine.
3.
FLASHCARD QUESTION
Front
Explain how mutagens can cause genetic mutations in spite of your body’s DNA repair enzymes.
Back
Mutagens may cause so much damage that the repair enzymes cannot keep up with the repairs.
4.
FLASHCARD QUESTION
Front
What might be the advantages and disadvantages of being tested for genetic mutations associated with diseases?
Back
Advantage: A person would know to look for symptoms and would be able to prepare and seek possible treatment. Disadvantage: There may be no cure for the disease, or simply having the gene may not mean that getting the disease is inevitable.
5.
FLASHCARD QUESTION
Front
Explain why mutagens can damage DNA in spite of repair enzymes.
Back
The mutagens can induce more mutations than the repair enzymes can fix.
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