The substitution of one or more bases of DNA is called:
Correct answer: B. Point mutation
- A. Insertion
- B. Point mutation
- C. Deletion
- D. Transposition
Explanation
A point mutation refers to the substitution, insertion, or deletion of a single nucleotide base (or a few bases) in a DNA sequence. When only one base pair is altered, it's specifically referred to as a point mutation. This type of mutation can have various effects, ranging from no observable impact to significant changes in the resulting protein sequence or gene function.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Chromosomes
Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
Practise Cell Structure and Function
2,484 free Cell Structure and Function MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.