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Which type of mutation is caused by dele...

Which type of mutation is caused by deletions and insertions of base pairs of DNA?

A

Frame-shift

B

Point

C

Both (a) and (b)

D

Neither (a) nor (b)

Text Solution

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Mutations**: Start by recognizing that mutations are changes in the DNA sequence. They can occur in various forms, including point mutations, frame shift mutations, and others. 2. **Types of Mutations**: - **Point Mutation**: This type of mutation involves the addition or deletion of a single nucleotide base pair. It typically affects only one codon in the DNA sequence. - **Frame Shift Mutation**: This type of mutation occurs when there are insertions or deletions of nucleotide base pairs that are not in multiples of three. This shifts the reading frame of the genetic code, affecting all subsequent codons. 3. **Identifying the Mutation Type**: The question specifically asks about mutations caused by deletions and insertions of base pairs. - If a single nucleotide is deleted or inserted, it results in a point mutation. - However, if there are multiple nucleotides added or removed (not in multiples of three), it results in a frame shift mutation. 4. **Conclusion**: Since the question refers to deletions and insertions of base pairs in general, the correct answer is that these changes lead to a **frame shift mutation**. **Final Answer**: The type of mutation caused by deletions and insertions of base pairs of DNA is called a **frame shift mutation**. ---
**Step-by-Step Solution:** 1. **Understanding Mutations**: Start by recognizing that mutations are changes in the DNA sequence. They can occur in various forms, including point mutations, frame shift mutations, and others. 2. **Types of Mutations**: - **Point Mutation**: This type of mutation involves the addition or deletion of a single nucleotide base pair. It typically affects only one codon in the DNA sequence. - **Frame Shift Mutation**: This type of mutation occurs when there are insertions or deletions of nucleotide base pairs that are not in multiples of three. This shifts the reading frame of the genetic code, affecting all subsequent codons. ...
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Detetions and insertions of base pairs of DNA causes

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Give one word for the following : (i) Phenomenon which results in alternation of DNA sequences of consequently results in changes in the genotype and the phenotype of an organism. (ii) Type of mutation that arise due to change in a single base pair of DNA.

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Give one word for the following: Type of mutation that arise due to change in a single base pair of DNA.

Select the specific base pairs of DNA :

The distance between two base - pairs in DNA is :

A class of mutation induced by addition or deletion of a nucleotide is called :-