Biology
Grade-8
Easy
Question
What is a type of Mutation?
- Deletions
- Insertions
- Base Substitutions
- All of the above
Hint:
Chromosomal alterations are mutations that change chromosome structure. Deletion, insertion, inversion, and substitution are the types of mutation.
The correct answer is: All of the above
- There are lots of different mutations that can occur in our DNA.
- Point mutation– a change in one base of the DNA sequence.
- Substitution – when one or more bases in the sequence are replaced by the same number of bases (for example, a cytosine substituted for an adenine).
- Inversion – when a segment of a chromosome is reversed end to end.
- Insertion – when a base is added to the sequence
- Deletion – when a base is deleted from the sequence
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