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  2. Homology (biology) - Wikipedia

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

    The principle of homology: The biological relationships (shown by colours) of the bones in the forelimbs of vertebrates were used by Charles Darwin as an argument in favor of evolution. In biology , homology is similarity in anatomical structures or genes between organisms of different taxa due to shared ancestry , regardless of current ...

  3. MODELLER - Wikipedia

    en.wikipedia.org/wiki/MODELLER

    Modeller, often stylized as MODELLER, is a computer program used for homology modeling to produce models of protein tertiary structures and quaternary structures (rarer). [2] [3] It implements a method inspired by nuclear magnetic resonance spectroscopy of proteins (protein NMR), termed satisfaction of spatial restraints, by which a set of geometrical criteria are used to create a probability ...

  4. Deep homology - Wikipedia

    en.wikipedia.org/wiki/Deep_homology

    Whereas ordinary homology is seen in the pattern of structures such as limb bones of mammals that are evidently related, deep homology can apply to groups of animals that have quite dissimilar anatomy: vertebrates (with endoskeletons made of bone and cartilage) and arthropods (with exoskeletons made of chitin) nevertheless have limbs that are constructed using similar recipes or "algorithms".

  5. 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 ...

  6. Comparative anatomy - Wikipedia

    en.wikipedia.org/wiki/Comparative_anatomy

    Comparative anatomy is the study of similarities and differences in the anatomy of different species. It is closely related to evolutionary biology and phylogeny [ 1 ] (the evolution of species). The science began in the classical era , continuing in the early modern period with work by Pierre Belon who noted the similarities of the skeletons ...

  7. HMMER - Wikipedia

    en.wikipedia.org/wiki/HMMER

    A profile HMM modelling a multiple sequence alignment. HMMER is a free and commonly used software package for sequence analysis written by Sean Eddy. [2] Its general usage is to identify homologous protein or nucleotide sequences, and to perform sequence alignments.

  8. Gender identity question, ethnicity option among new ... - AOL

    www.aol.com/gender-identity-ethnicity-option...

    Clearer questions pertaining to sexual orientation, gender identity, race and ethnicity are one step closer to appearing on the U.S. Census.. Following new categorizing standards set by the ...

  9. Homoplasy - Wikipedia

    en.wikipedia.org/wiki/Homoplasy

    This is different from homology, which is the term used to characterize the similarity of features that can be parsimoniously explained by common ancestry. [1] Homoplasy can arise from both similar selection pressures acting on adapting species, and the effects of genetic drift .

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