Sequence homology

Sequence homology: Similarities in nucleic acid sequence and organization, and in their encoded products, that are sufficiently great as to imply common ancestral origins.
Sequence Polymorphism: See Polymorphism.
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They share amino acid sequence homology and core structural similarity to a specific class of major histones but also posses their own feature that is distinct from the major histones.
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Overbeek pointed out other problems in relying on sequence homology for gene identification. He cited one case in which enzymes shared sequence homology but belonged to unrelated metabolic pathways.
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All the genes in the mammalian Hox clusters show some sequence homology to each other (especially in their homeobox) but very strong sequence homology to the equivalent genes in Drosophila.
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: The preservation of sequence homology among members of a multigene family within the same species.
Congenic ...
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Unlike RecA mediated recombination, site-specific recombination requires little sequence homology between the two DNA molecules. The best understood example is the integration of lambda into the E.
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In this case study you will learn about the mating calls of Physalaemus frogs, and how the calls have evolved over time. You also will see how scientists use molecular information to develop an evolutionary tree based on sequence homology.
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These proteins have several regions with sequence homology, including a centrally located DNA-binding domain with five C2-H2 zinc fingers and a C-terminal transcription activation domain.
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