Mindblown: a blog about philosophy.

  • Histidine

    An essential amino acid important in a number of metabolic processes. It is required for the production of histamine. An essential amino acid with a basic side chain. A basic amino acid that is essential in the nutrition of the rat. It is formed by the decomposition of most proteins (as globin). An amino acid…

  • Hexosyltransferases

    Enzymes that catalyze the transfer of hexose groups.  

  • Heterozygotes

    Having unlike alleles at one or more corresponding loci on homologous chromosomes. An individual organism with different alleles at one or more particular loci. In genetics, an organism with unlike members of any given pair of series of alleles which consequently produces unlike gametes. An individual having unlike copies of a gene coding for a…

  • Heterotrophic

    Pertaining to organisms that are consumers and dependent on other organisms for their source of energy (food). A plant that obtains starch from sources other than photosynthesis. Organisms that must obtain some or all of their food from external sources. In general, applied to animals and non-photosynthetic plants, heterotroph. Describing organisms (known as heterotrophs) that…

  • Heterogeneity

    The property of one or more samples or populations which implies that they are not identical in respect of some or all of their parameters, e. g. heterogeneity of variance. Dissimilarity in the genotypic structure of individuals originating through sexual reproduction. The quality of being heterogeneous.  

  • Heterodimers

    Zippered pair of nonidentical proteins.  

  • Heterochromatin

    The portion of chromosome material that remains condensed and is transcriptionally inactive during interphase. Chromatin staining differently and functioning differently than euchromatin which contains most of the genes. In Drosophila salivary preparations, the heterochromatin is mostly in the chromocenter. Chromosome material that stains most deeply when the cell is not dividing. It is thought not…

  • Herpes zoster

    Acute vesicular inflammation. Shingles. The infectious agent is the varicella zoster vims. Inflammation of a sensory nerve, characterised by pain along the nerve and causing a line of blisters to form on the skin, usually found mainly on the abdomen or back, or on the face. Painful raised lesions along nerve roots; also called shingles.…

  • Heredity

    The genetic transmission of a particular quality or trait from parent to offspring. The genetic constitution of an individual. Transfer of genetic information from parent cells to progeny. Refers to factors or traits passed from one generation to another through the genes. The process by which genetically controlled characteristics pass from parents to children. Process…

  • Hereditary

    Of, relating to, or denoting factors that can be transmitted genetically from one generation to another. Passed as from parents to children through the genes. To transmission from parents to offspring; inherited (e.g., hereditary disorder, a disorder that is passed from parents to offspring). Having to do with the transmission or characteristics, through the cellular…

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