A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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Homologous characters of organisms that have seemingly lost all or most of their original function in a species through evolution.
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HLA stands for human leukocyte antigen. It is the name for gene loci which encode the major histocompatibility complex in humans. This locus is important for the function of the immune system in human…
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can be used for questions related to the processing of images used to provide photographic evidence of a biological phenomena or to explain reasons why a photograph may suggest one phenomena …
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Biopigment, present in the skin and hair of humans.
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A method to purify small amounts of bacterial plasmids from the cells to get purified DNA at the end.
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Ribosomal RNA - builds together with the protein subunits the Ribosome. It is the most predominant material of the ribosome, approximately 60% of the weight are made of rRNA and 40% of proteins.
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The biologically oriented study of excrement. Tag should be used for questions related solely to feces without the question expressly asking about vertebrate digestion or pathological conditions relat…
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an intracellular degradation system that delivers cytoplasmic constituents to the lysosome.
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Questions about artificial life, or Alife, which is the study of life processes using simulations, computer models, and robotics. Please be careful to ensure that questions are on-topic for Biology, s…
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Tag for questions related to the ability of bacteria to adapt to antibiotic agents in there environment through genes present in their genome or acquired from the DNA of other organisms through the pr…
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Questions pertaining to 1) the file format used for electron density information acquired by x-ray crystallography and cryo-electron microscopy, or 2) the project to develop software for x-ray crystal…
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bacteria which have been treated with chemicals and which are able to take up external DNA.