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  2. List of medical roots, suffixes and prefixes - Wikipedia

    en.wikipedia.org/wiki/List_of_medical_roots...

    First, prefixes and suffixes, most of which are derived from ancient Greek or classical Latin, have a droppable vowel, usually -o-. As a general rule, this vowel almost always acts as a joint-stem to connect two consonantal roots (e.g. arthr- + -o- + -logy = arthrology ), but generally, the -o- is dropped when connecting to a vowel-stem (e.g ...

  3. Dominance (genetics) - Wikipedia

    en.wikipedia.org/wiki/Dominance_(genetics)

    Autosomal dominant and autosomal recessive inheritance, the two most common Mendelian inheritance patterns. An autosome is any chromosome other than a sex chromosome.. In genetics, dominance is the phenomenon of one variant of a gene on a chromosome masking or overriding the effect of a different variant of the same gene on the other copy of the chromosome.

  4. Carcinogenesis - Wikipedia

    en.wikipedia.org/wiki/Carcinogenesis

    The central role of DNA damage and epigenetic defects in DNA repair genes in carcinogenesis. DNA damage is considered to be the primary cause of cancer. [17] More than 60,000 new naturally-occurring instances of DNA damage arise, on average, per human cell, per day, due to endogenous cellular processes (see article DNA damage (naturally occurring)).

  5. Hereditary cancer syndrome - Wikipedia

    en.wikipedia.org/wiki/Hereditary_cancer_syndrome

    Familial adenomatous polyposis is a cancer syndrome in which there are hundreds to thousands of benign adenomas in the colon.. A hereditary cancer syndrome (familial/family cancer syndrome, inherited cancer syndrome, cancer predisposition syndrome, cancer syndrome, etc.) is a genetic disorder in which inherited genetic mutations in one or more genes predispose the affected individuals to the ...

  6. Gene nomenclature - Wikipedia

    en.wikipedia.org/wiki/Gene_nomenclature

    The research communities of vertebrate model organisms have adopted guidelines whereby genes in these species are given, whenever possible, the same names as their human orthologs. The use of prefixes on gene symbols to indicate species (e.g., "Z" for zebrafish) is discouraged.

  7. Oncogene - Wikipedia

    en.wikipedia.org/wiki/Oncogene

    If, through mutation, normal genes promoting cellular growth are up-regulated (gain-of-function mutation), they predispose the cell to cancer and are termed oncogenes. Usually, multiple oncogenes, along with mutated apoptotic or tumor suppressor genes, act in concert to cause cancer. Since the 1970s, dozens of oncogenes have been identified in ...

  8. PTEN (gene) - Wikipedia

    en.wikipedia.org/wiki/PTEN_(gene)

    The defective protein is unable to stop cell division or signal abnormal cells to die, which can lead to tumor growth, particularly in the breast, thyroid, or uterus. [24] Mutations in the PTEN gene cause several other disorders that, like Cowden syndrome, are characterized by the development of non-cancerous tumors called hamartomas.

  9. Glossary of genetics and evolutionary biology - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_genetics_and...

    A relationship between the alleles of a gene in which one allele produces an effect on phenotype that overpowers or "masks" the contribution of another allele at the same locus; the first allele and its associated phenotypic trait are said to be dominant, and the second allele and its associated trait are said to be recessive. Often, the ...

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