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  2. Homology (biology) - Wikipedia

    en.wikipedia.org/wiki/Homology_(biology)

    In biology, homology is similarity in anatomical structures or genes between organisms of different taxa due to shared ancestry, regardless of current functional differences. Evolutionary biology explains homologous structures as retained heredity from a common ancestor after having been subjected to adaptive modifications for different ...

  3. Sequence homology - Wikipedia

    en.wikipedia.org/wiki/Sequence_homology

    Sequence homology is the biological homology between DNA, RNA, or protein sequences, defined in terms of shared ancestry in the evolutionary history of life. Two segments of DNA can have shared ancestry because of three phenomena: either a speciation event (orthologs), or a duplication event (paralogs), or else a horizontal (or lateral) gene ...

  4. Homology - Wikipedia

    en.wikipedia.org/wiki/Homology

    Homology (biology), any characteristic of biological organisms that is derived from a common ancestor Sequence homology , biological homology between DNA, RNA, or protein sequences Homologous chromosomes , chromosomes in a biological cell that pair up (synapse) during meiosis

  5. Evolutionary developmental biology - Wikipedia

    en.wikipedia.org/wiki/Evolutionary_developmental...

    Evolutionary developmental biology (informally, evo-devo) is a field of biological research that compares the developmental processes of different organisms to infer how developmental processes evolved.

  6. Evidence of common descent - Wikipedia

    en.wikipedia.org/wiki/Evidence_of_common_descent

    The history of the camel provides an example of how fossil evidence can be used to reconstruct migration and subsequent evolution. The fossil record indicates that the evolution of camelids started in North America (see figure 4e), from which, six million years ago, they migrated across the Bering Strait into Asia and then to Africa, and 3.5 ...

  7. Deep homology - Wikipedia

    en.wikipedia.org/wiki/Deep_homology

    In modern day biology, the depth of understanding deep homology has evolved into focusing on the molecular and genetic mechanisms and functions rather than simple morphology. Cancer stem cells (CSCs) are a population of cells within a tumor that have the ability to self-renew and differentiate into different cell types, similar to normal stem ...

  8. On the Origin of Species - Wikipedia

    en.wikipedia.org/wiki/On_the_Origin_of_Species

    On the Origin of Species (or, more completely, On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life) [3] is a work of scientific literature by Charles Darwin that is considered to be the foundation of evolutionary biology. It was published on 24 November 1859. [4]

  9. Homologous chromosome - Wikipedia

    en.wikipedia.org/wiki/Homologous_chromosome

    Both of these properties (i.e., the length of chromosomal arms, and the placement of the chromosomal centromere) are the main factors for creating structural homology between chromosomes. Therefore, when two chromosomes containing the relatively same structure exist (e.g., maternal chromosome 15 and paternal chromosome 15), they are able to ...