polygenesis definition
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Definitions &Translations Freebase(0.00 / 0 votes)Rate this definition: Polygenesis. In the field of linguistics, polygenesis is the view that human languages evolved as several lineages independent of one another. It is contrasted with monogenesis, which is the view that human languages all go back to a single common ancestor.
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Hyperplasia (May 2015). Hyperplasia (from ancient Greek ὑπέρ huper, over + πλάσις plasis, formation), or hypergenesis, is an increase in the amount of organic tissue that results from cell proliferation. It may lead to the gross enlargement of an organ and the term is sometimes confused with benign neoplasia or benign tumor.Hyperplasia is a common preneoplastic response to stimulus. Microscopically, cells resemble normal cells but are increased in numbers.Sometimes cells may also be increased in size (hypertrophy).May 2015). Hyperplasia (from ancient Greek ὑπέρ huper, over + πλάσις plasis, formation), or hypergenesis, is an increase in the amount of organic tissue that results from cell proliferation. It may lead to the gross enlargement of an organ and the term is sometimes confused with benign neoplasia or benign tumor.
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- A trait that is controlled by a group of nonallelic genes. Polygenic traits are controlled by two or more than two genes (usually by many different genes) at different loci on different chromosomes. These genes are described as polygenes. Examples of human polygenic inheritance are height, skin colour and weight. Polygenes allow a wide range of physical traits. For instance, height is regulated by several genes so that there will be a wide range of heights in a population. Word origin: poly = many + genic = of genes.
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- Biogenesis. Definition. noun. (1) The process in which life forms arise from similar life forms. (2) It asserts that living things can only be produced by another living thing, and not by a non-living thing.
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What is a Polygenic Inheritance? polygenic inheritance- the inheritance of quantitative traits, traits which are influenced by multiple genes. Polygenic inheritance shows how multiple genes in combination w … ith a person's environment can influence someone's phenotype, or physical appearance.
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- Definition of GLUCONEOGENESIS. : formation of glucose within the animal body especially by the liver from substances (as fats and proteins) other than carbohydrates. ADVERTISEMENT. New Latin.First Known Use: 1912. formation of glucose within the animal body especially by the liver from substances (as fats and proteins) other than carbohydrates.
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PLATE TECTONICS Orogenesis, on the other hand, is mountain building, as the prefix oros (mountain) shows. Orogenesis involves the formation of mountain ranges by means of folding, faulting, and volcanic activity—lateral movements as opposed to vertical ones.
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- poly-. combining form. 1. more than one; many or much: polyhedron.
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Carcinogenesis Carcinogenesis or oncogenesis or tumorigenesis is the actual formation of a cancer, whereby normal cells are transformed into cancer cells.ells often die if they are damaged, through failure of a vital process or the immune system; however, sometimes damage will knock out a single cancer gene. In an old person, there are thousands, tens of thousands or hundreds of thousands of knocked-out cells.
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Metagenesis Metagenesis. in animals, a form of alternation of generations in which a generation developed by sexual means is followed by one or more that reproduce asexually.
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- Diagenesis ( /ˌdaɪəˈdʒɛnɪsɪs/) is the change of sediments or existing sedimentary rocks into a different sedimentary rock during and after rock formation (lithification), at temperatures and pressures less than that required for the formation of metamorphic rocks.[1] It does not include changes from weathering.[1] It is any chemical, physical, or ...
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- Polygenic. Inheritance of quantitative traits or polygenic inheritance refers to the inheritance of a phenotypic characteristic that varies in degree and can be attributed to the interactions between two or more genes and their... 2 Multifactorial and polygenic (complex) disorders.
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Is it legal to have a sea otter as a pet? Rating Newest Oldest. Best Answer: it is illegal to own a sea otter as a pet in the United States unless you have a permit which can only be obtained after 2 years of schooling on wildlife rehabillitation. just now. Report Abuse. No, sea otters are not pets. It is illegal to have wild animals (such as sea otters) for pets or to care for them without being licensed. He was being bathed because he was covered in oil from people polluting his natural habitat and if they hadn't he would have died.
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- From Wikipedia, the free encyclopedia. Metaplasia (Greek : change in form) is the reversible replacement of one differentiated cell type with another mature differentiated cell type.The change from one type of cell to another may generally be a part of normal maturation process or caused by some sort of abnormal stimulus.etaplasia is not synonymous with dysplasia and is not directly considered carcinogenic. It is also contrasted with heteroplasia, which is the abnormal growth of cytologic and histologic elements without a stimulus.
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Biogenesis For other uses, see Biogenesis (disambiguation) . Biogenesis is the production of new living organisms or organelles. The law of biogenesis, attributed to Louis Pasteur, is the observation that living things come only from other living things, by reproduction (e.g. a spider lays eggs, which develop into spiders).
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metaplasia the change in the type of adult cells in a tissue to a form abnormal for that tissue. adj., adj metaplas´tic. 1  agnogenic myeloid metaplasia the primary or idiopathic form of myeloid metaplasia, which is often accompanied by myelofibrosis; it is considered one of the myeloproliferative disorders.
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Biology Gametogenesis is a biological process by which diploid or haploid precursor cells undergo cell division and differentiation to form mature haploid gametes.
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Polygenic inheritance Polygenic inheritance. Definition. noun. A non-Mendelian form of inheritance in which a particular trait is produced by the interaction of many genes.Supplement.Polygenic inheritance refers to the kind of inheritance in which the trait is produced from the cumulative effects of many genes in contrast to monogenic inheritance wherein the trait results from the expression of one gene (or one gene pair). non-Mendelian form of inheritance in which a particular trait is produced by the interaction of many genes.
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polygenesis Historical Examples. 1  polygenesis in his inventions may probably be regarded as testimony in favour of the monogenesis of Man. 2  polygenesis, pol-i-jen′e-sis, n. origin from many separate germs: the theory that organisms sprang from different cells.
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GENETICS 1. polygenic-of or relating to an inheritable character that is controlled by several genes at once; of or related to or determined by polygenes. genetic science, genetics-the branch of biology that studies heredity and variation in organisms.
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What is biogenesis? Answer: The term biogenesis refers to the production of life from already-living matter or organisms. This is in contrast to abiogenesis, which refers to the production of life from non-living matter. Natural abiogenesis has never been observed, nor are there any generally accepted models for how it could occur. Biogenesis, on the other hand, is routinely observed at all levels of life.
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Definitions &Translations Angiogenesis is the physiological process through which new blood vessels form from pre-existing vessels. This is distinct from vasculogenesis, which is the de novo formation of endothelial cells from mesoderm cell precursors.owever, it is also a fundamental step in the transition of tumors from a benign state to a malignant one, leading to the use of angiogenesis inhibitors in the treatment of cancer.
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Talk:Alternation of generations Alternation of generations, also called metagenesis or heterogenesis, in biology, the alternation of a sexual phase and an asexual phase in the life cycle of an organism. The two phases, or generations, are often morphologically, and sometimes chromosomally, distinct. The life cycle of the fern.
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Polygenic A polygenic trait is one whose phenotype is influenced by more than one gene. Trait s that display a continuous distribution, such as height or skin color, are polygenic.
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Dictionary Definition Parthenogenesis (from the Greek παρθένος parthenos, virgin, + γένεσις genesis, creation) is an asexual form of reproduction found in females where growth and development of embryos or seeds occurs without fertilization by males.
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- Polygenic inheritance. Polygenic inheritance is a characteristic that is controlled by more than one gene (poly means many). Environmental impact on height in humans