Which evidence best supports the claim that mutations are a source of inheritable genetic variation?(1 point)

Question

Responses

Mutations affect protein synthesis which impacts the way traits are expressed.
Mutations affect protein synthesis which impacts the way traits are expressed.

Mutations can only happen during meiosis because genes are inherited.
Mutations can only happen during meiosis because genes are inherited.

Mutations affect the way DNA is created through transcription.
Mutations affect the way DNA is created through transcription.

Mutations are not inheritable from gametes because they are given from each parent.

Use the diagram to answer the question.



What type of mutation error has occurred to cause the disorder shown?(1 point)
Responses

insertion
insertion

deletion
deletion

frameshift
frameshift

substitution

Examine the two strands of DNA below. Which kind of mutation occurred?

Original strand: AGC GTA CCC TAC

New strand: AGC GTA ACC TAC

(1 point)
Responses

deletion
deletion

insertion
insertion

frameshift
frameshift

substitution

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? (1 point)
Responses

polluted environment
polluted environment

radiation exposure
radiation exposure

food availability
food availability

exercise requirement

What is one way that a frameshift mutation could occur? (1 point)
Responses

two nucleotides are deleted
two nucleotides are deleted

two nucleotides are substituted
two nucleotides are substituted

three nucleotides are inserted
three nucleotides are inserted

three nucleotides are deleted

Answer 1

1. Which evidence best supports the claim that mutations are a source of inheritable genetic variation?

   • Response: Mutations affect protein synthesis which impacts the way traits are expressed.

2. What type of mutation error has occurred to cause the disorder shown?

   • Response: This question may depend on the diagram referenced, but common answers could be deletion, insertion, frameshift, or substitution based on the specific details of the disorder.

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
   • Response: This is a substitution mutation, where the "C" in "CCC" was changed to an "A".

4. Which type of environmental factor caused this mutation to be inherited?

   • Response: None of the options provided (polluted environment, radiation exposure, food availability, exercise requirement) directly cause genetic mutations to be inherited in the manner described. However, among the choices given, radiation exposure is more commonly associated with causing mutations that could be inherited.

5. What is one way that a frameshift mutation could occur?

   • Response: Two nucleotides are deleted. (Note: However, deleting one nucleotide would also lead to a frameshift.)

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