1. Which evidence best supports the claim that mutations are a source of inheritable genetic variation?
A. Mutations affect protein synthesis which impacts the way traits are expressed.
B. Mutations affect the way DNA is created through transcription.
C. Mutations are not inheritable from gametes because they are given from each parent.
D. Mutations can only happen during meiosis because genes are inherited.
2. What type of mutation error has occurred to cause the disorder shown?
A. Insertion
B. Deletion
C. Frameshift
D. Substitution
3. Examine the two strands of DNA below. Which kind of mutation occurred?
Original strand: AGC GTA CCC TAC
New strand: AGC GTA ACC TAC
A. Deletion
B. Substitution
C. Insertion
D. Frameshift
4. Millions of years ago, the ancestors of giraffes had short necks and used to eat leaves from the bushes on the ground. A genetic mutation caused one giraffe's neck to be taller. This long-necked giraffe was able to eat leaves that were higher up on trees. This gave it an advantage as it was able to access more food than other giraffes. Over millions of years, all of the giraffes became long-necked. Which type of environmental factor caused this mutation to be inherited?
A. exercise requirement
B. radiation exposure
C. food availability
D. polluted environment
5. What is one way that a frameshift mutation could occur?
A. three nucleotides are deleted
B. two nucleotides are deleted
C. two nucleotides are substituted
D. three nucleotides are inserted
1. A. Mutations affect protein synthesis which impacts the way traits are expressed.
2. C. Frameshift
3. B. Substitution
4. C. Food availability
5. B. Two nucleotides are deleted