enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Repeated sequence (DNA) - Wikipedia

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

    Repeated sequences (also known as repetitive elements, repeating units or repeats) are short or long patterns that occur in multiple copies throughout the genome. In many organisms, a significant fraction of the genomic DNA is repetitive, with over two-thirds of the sequence consisting of repetitive elements in humans. [ 1 ]

  3. Recurrent evolution - Wikipedia

    en.wikipedia.org/wiki/Recurrent_evolution

    Recurrent evolution also referred to as repeated [1] [2] or replicated [3] evolution is the repeated evolution of a particular trait, character, or mutation. [4] Most evolution is the result of drift, often interpreted as the random chance of some alleles being passed down to the next generation and others not.

  4. Tandem repeat - Wikipedia

    en.wikipedia.org/wiki/Tandem_repeat

    All tandem repeat arrays are classifiable as satellite DNA, a name originating from the fact that tandem DNA repeats, by nature of repeating the same nucleotide sequences repeatedly, have a unique ratio of the two possible nucleotide base pair combinations, conferring them a specific mass density that allows them to be separated from the rest of the genome with density-based laboratory ...

  5. Protein tandem repeats - Wikipedia

    en.wikipedia.org/wiki/Protein_tandem_repeats

    Example multiple sequence alignment of a pentapeptide repeat leading to a tandem repeat structure. In proteins, a "repeat" is any sequence block that returns more than one time in the sequence, either in an identical or a highly similar form. The degree of similarity can be highly variable, with some repeats maintaining only a few conserved ...

  6. STR analysis - Wikipedia

    en.wikipedia.org/wiki/STR_analysis

    Short tandem repeat (STR) analysis is a common molecular biology method used to compare allele repeats at specific loci in DNA between two or more samples. A short tandem repeat is a microsatellite with repeat units that are 2 to 7 base pairs in length, with the number of repeats varying among individuals, making STRs effective for human ...

  7. Direct repeat - Wikipedia

    en.wikipedia.org/wiki/Direct_repeat

    Flanking (or terminal) repeats (terminal repeat sequences) are sequences that are repeated on both ends of a sequence, for example, the long terminal repeats (LTRs) on retroviruses. Direct terminal repeats are in the same direction and inverted terminal repeats are opposite to each other in direction.

  8. Pattern formation - Wikipedia

    en.wikipedia.org/wiki/Pattern_formation

    In developmental biology, pattern formation refers to the generation of complex organizations of cell fates in space and time. The role of genes in pattern formation is an aspect of morphogenesis, the creation of diverse anatomies from similar genes, now being explored in the science of evolutionary developmental biology or evo-devo.

  9. Turing pattern - Wikipedia

    en.wikipedia.org/wiki/Turing_pattern

    Three examples of Turing patterns Six stable states from Turing equations, the last one forms Turing patterns. The Turing pattern is a concept introduced by English mathematician Alan Turing in a 1952 paper titled "The Chemical Basis of Morphogenesis" which describes how patterns in nature, such as stripes and spots, can arise naturally and autonomously from a homogeneous, uniform state.