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How does a transversion mutation result in a purine being replaced by a pyrimidine or vice versa?

Carlee Ferry ∙

Lvl 10

∙ 2mo ago

Updated: 1/19/2025

A transversion mutation is a type of genetic change where a purine (adenine or guanine) is replaced by a pyrimidine (cytosine or thymine) or vice versa. This mutation occurs when a single nucleotide base in the DNA sequence is substituted with a different type of base. This change can lead to alterations in the genetic code and potentially impact the function of the gene.

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Q: How does a transversion mutation result in a purine being replaced by a pyrimidine or vice versa?

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What is the difference between transition and transversion in terms of genetic mutations?

Transition and transversion are two types of point mutations that occur in DNA. Transition is a mutation where a purine base (A or G) is replaced by another purine, or a pyrimidine base (C or T) is replaced by another pyrimidine. Transversion, on the other hand, is a mutation where a purine base is replaced by a pyrimidine base, or vice versa. In summary, the main difference between transition and transversion is the type of base substitution that occurs during the mutation process.

What are the key differences between transversion and transition in the context of genetic mutations?

Transversion and transition are two types of point mutations in genetics. Transversion is a mutation where a purine base is replaced by a pyrimidine base, or vice versa. Transition, on the other hand, is a mutation where a purine base is replaced by another purine base, or a pyrimidine base is replaced by another pyrimidine base. These differences in base substitutions can have varying effects on the resulting protein or gene function.

What is transversion mutation?

A transversion mutation is a type of point mutation where a purine base is substituted for a pyrimidine, or vice versa. This type of mutation results in a change in the base pair from a double-ring structure to a single-ring structure, potentially causing changes in the amino acid sequence during protein synthesis.

What are the differences between transversion and transition mutations in terms of their impact on genetic variation and evolution?

Transversion mutations involve the substitution of a purine base with a pyrimidine base, or vice versa, while transition mutations involve the substitution of a purine base with another purine, or a pyrimidine base with another pyrimidine. Transversion mutations typically have a greater impact on genetic variation and evolution compared to transition mutations, as they are more likely to result in changes to the amino acid sequence of a protein, potentially leading to functional differences.

When DNA replication occurs before meiosis the original DNA strand cag ccg tag is copied into complementary strand gtc aca ggc atc what type of mutation has occurred?

A point mutation has occurred in this case, specifically a transition mutation where one purine (adenine or guanine) is replaced by another purine, or one pyrimidine (thymine or cytosine) is replaced by another pyrimidine. In this example, the cytosine (C) in the original strand has been replaced by a guanine (G) in the complementary strand.

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Related Questions

What is the difference between transition and transversion in terms of genetic mutations?

Transition and transversion are two types of point mutations that occur in DNA. Transition is a mutation where a purine base (A or G) is replaced by another purine, or a pyrimidine base (C or T) is replaced by another pyrimidine. Transversion, on the other hand, is a mutation where a purine base is replaced by a pyrimidine base, or vice versa. In summary, the main difference between transition and transversion is the type of base substitution that occurs during the mutation process.

What are the key differences between transversion and transition in the context of genetic mutations?

Transversion and transition are two types of point mutations in genetics. Transversion is a mutation where a purine base is replaced by a pyrimidine base, or vice versa. Transition, on the other hand, is a mutation where a purine base is replaced by another purine base, or a pyrimidine base is replaced by another pyrimidine base. These differences in base substitutions can have varying effects on the resulting protein or gene function.

What is transversion mutation?

A transversion mutation is a type of point mutation where a purine base is substituted for a pyrimidine, or vice versa. This type of mutation results in a change in the base pair from a double-ring structure to a single-ring structure, potentially causing changes in the amino acid sequence during protein synthesis.

Does the last nucleotide in a codon have less specificity than the others and if so why?

Yes, this is true (generally speaking). In many cases there are two different codons that differ at the third position yet code the same amino acid. I hypothesize that the reason that this is so is that nature has naturally selected the codons to be resistant to certain transition and transversion mutations. transition mutation = purine to purine or pyrimidine to pyrimidine transversion mutation = purine to pyrimidine or pyrimidine to purine

What are the three common base-pair substitutions?

The three common base-pair substitutions are: Transition: a purine is replaced with another purine or a pyrimidine is replaced with another pyrimidine. Transversion: a purine is replaced with a pyrimidine or vice versa. Silent mutation: a base-pair substitution that does not result in a change to the amino acid sequence due to the degeneracy of the genetic code.

Is transversion of t to an equivalent to transversion of t to g For example is T961a the equivalent of T961g?

Transversion is the substitution of a purine for a pyrimidine and vice versa. The nitrogen bases adenine (A) and guanine (G) are purines and the nitrogen bases thymine (T) and cytosine (C) are pyrimidines. The transversion of T to A is equivalent to the transversion of T to G in that a pyrimidine, T, is substituted by either the purine A or the purine G. T961a is not equivalent to T961g.

What are the differences between transversion and transition mutations in terms of their impact on genetic variation and evolution?

Transversion mutations involve the substitution of a purine base with a pyrimidine base, or vice versa, while transition mutations involve the substitution of a purine base with another purine, or a pyrimidine base with another pyrimidine. Transversion mutations typically have a greater impact on genetic variation and evolution compared to transition mutations, as they are more likely to result in changes to the amino acid sequence of a protein, potentially leading to functional differences.

When DNA replication occurs before meiosis the original DNA strand cag ccg tag is copied into complementary strand gtc aca ggc atc what type of mutation has occurred?

A point mutation has occurred in this case, specifically a transition mutation where one purine (adenine or guanine) is replaced by another purine, or one pyrimidine (thymine or cytosine) is replaced by another pyrimidine. In this example, the cytosine (C) in the original strand has been replaced by a guanine (G) in the complementary strand.

What is mutation and how many types of mutaion are there?

A mutation is any change in the DNA sequence. This list probably isn't exhaustive, but the types I can think of are: point (one basepair is changed into another) deletion (one or more basepairs is removed) insertion (one or more basepairs is added to the DNA sequence) translocation (a segment of DNA is moved from one region to another) duplication (a region of DNA is... well duplicated... some regions of DNA, particularly repetitive regions are often subject to extensive expansion) If you want to get really technical there are lots of subtypes and terminology used to describe mutations. A point mutation could also be termed a lot of other things, particularly if it is in a stretch of coding DNA (silent, missense, and nonsense mutations) and can be further subdivided by whether it's a change between a purine and a purine (transition mutation), a pyrimidine and pyrimidine (also a transition mutation), or a purine and a pyrimidine (transversion mutation).

How are four bases paired in a molecule DNA?

Adenine(purine)=========thymine(pyrimidine)Guanine(purine)----------------cytosine(pyrimidine)

Is nitrogen a base?

A basic compound that contains nitrogen, such as a purine or pyrimidine. A basic compound that contains nitrogen, such as a purine or pyrimidine.

When purine base only pairs with a pyrimidine?

This is a basic principle of DNA base pairing called Chargaff's rule. Adenine (purine) pairs with thymine (pyrimidine), while guanine (purine) pairs with cytosine (pyrimidine). This complementary base pairing is essential for the double-stranded structure of DNA.

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