enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Replicon (genetics) - Wikipedia

   en.wikipedia.org/wiki/Replicon_(genetics)

   The initiator is the protein that recognizes the replicator and activates replication initiation. [1] Sometimes in bacteriology, the term "replicon" is only used to refer to chromosomes containing a single origin of replication and therefore excludes the genomes of archaea and eukaryotes which can have several origins. [2]

3. Postzygotic mutation - Wikipedia

   en.wikipedia.org/wiki/Postzygotic_mutation

   A postzygotic mutation (or post-zygotic mutation) is a change in an organism's genome that is acquired during its lifespan, instead of being inherited from its parent(s) through fusion of two haploid gametes. Mutations that occur after the zygote has formed can be caused by a variety of sources that fall under two classes: spontaneous mutations ...

4. Slipped strand mispairing - Wikipedia

   en.wikipedia.org/wiki/Slipped_strand_mispairing

   Slipped strand mispairing (SSM, also known as replication slippage) is a mutation process which occurs during DNA replication. It involves denaturation and displacement of the DNA strands, resulting in mispairing of the complementary bases. Slipped strand mispairing is one explanation for the origin and evolution of repetitive DNA sequences. [1]

5. DNA replication - Wikipedia

   en.wikipedia.org/wiki/DNA_replication

   Eukaryotes initiate DNA replication at multiple points in the chromosome, so replication forks meet and terminate at many points in the chromosome. Because eukaryotes have linear chromosomes, DNA replication is unable to reach the very end of the chromosomes. Due to this problem, DNA is lost in each replication cycle from the end of the chromosome.

6. Dynamic mutation - Wikipedia

   en.wikipedia.org/wiki/Dynamic_mutation

   These mutations, typically short sequences repeated many times, give rise to numerous known diseases, including the trinucleotide repeat disorders. Robert I. Richards and Grant R. Sutherland called these phenomena, in the framework of dynamical genetics, dynamic mutations. Triplet expansion is caused by slippage during DNA replication. Due to ...

7. Repeated sequence (DNA) - Wikipedia

   en.wikipedia.org/wiki/Repeated_sequence_(DNA)

   The presence of repeated sequence DNA makes it easier for areas of homology to align, thereby controlling when and where recombination occurs. In addition to playing an important role in recombination, tandem repeats also play important structural roles in the genome. For example, telomeres are composed mainly of tandem TTAGGG repeats. [15]

8. Mobile genetic elements - Wikipedia

   en.wikipedia.org/wiki/Mobile_genetic_elements

   Examples of mobile genetic elements in the cell (left) and the ways they can be acquired (right) Transposition of target sequence into recombination site in DNA by Transposase. Replication of the transposable sequence starts to occur when transposase cuts single strands on opposite sides of the dsDNA.

9. Trinucleotide repeat expansion - Wikipedia

   en.wikipedia.org/wiki/Trinucleotide_repeat_expansion

   Triplet expansion is caused by slippage during DNA replication, also known as "copy choice" DNA replication. [2] Due to the repetitive nature of the DNA sequence in these regions, 'loop out' structures may form during DNA replication while maintaining complementary base pairing between the parent strand and daughter strand being synthesized.