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the conditions, as physiological or behavioral differences or geographical barriers, that prevent potentially interbreeding populations from cross-fertilization.


Read Also:

  • Reproductive systems

    reproductive systems definition The organs and glands in the body that aid in the production of new individuals (reproduction). (See illustrations below and next page.) In the male, sperm are produced in the testes and conveyed to the female in a fluid called semen, which passes out of the body through the penis. Other parts […]

  • Reprogram

    noun 1. a plan of action to accomplish a specified end: a school lunch program. 2. a plan or schedule of activities, procedures, etc., to be followed. 3. a radio or television performance or production. 4. a list of items, pieces, performers, etc., in a musical, theatrical, or other entertainment. 5. an entertainment with reference […]

  • Reprogrammable

    or programable [proh-gram-uh-buh l, proh-gram-] /ˈproʊ græm ə bəl, proʊˈgræm-/ adjective 1. capable of being programmed. noun 2. an electronic device, as a calculator or telephone, that can be programmed to perform specific tasks. programmable /prəʊˈɡræməbəl/ adjective 1. (esp of a device or operation) capable of being programmed for automatic operation or computer processing

  • Reprographics

    [ree-pruh-graf-iks] /ˌri prəˈgræf ɪks/ noun, (used with a singular verb) 1. reprography.

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