"meyoz va uning biologik ahamiyati"

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powerpoint presentation buxoro shahar abu ali ibn sino nomidagi buxoro davlat tibbiyot instituti davolash fakulteti 105-”a” guruh talabalari tomonidan “meyoz va uning biologik ahamiyati” mavzusidagi ko’rgazma namoyishi tsel uroka: rassmotret osobennosti meyoza sravnit mexanizm i biologicheskoe znachenie mitoza i meyoza * meyoz - osobiy vid deleniya kletki, pri kotorom chislo xromosom v dochernix kletkax stanovitsya gaploidnim proisxodit pri obrazovanii polovix kletok v 1882 g. valter flemming otkril meyoz u jivotnix v 1888 g. edvard strasburger otkril meyoz u rasteniy * mexanizm meyoza vklyuchaet dva posledovatelnix deleniya kletki, sleduyushix drug za drugom interfaza i meyoz i interfaza ii meyoz ii nakaplivayutsya energiya i veshestva neobxodimie dlya oboix deleniy meyoza reduktsionnoe delenie prakticheski otsutstvuet; ne proisxodit replikatsiya dnk proisxodit po printsipu mitoza, no pri gaploidnom nabore xromosom * profaza i rastvorenie yadernoy obolochki i yadrishka spiralizatsiya xromosom rasxojdenie tsentrioley k polyusam kletki obrazovanie nitey veretena deleniya konyugatsiya (lat. sonjugatio – soedinenie) – …

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xromosom - rastvorenie yadernoy obolochki i yadrishka - spiralizatsiya xromosom - rasxojdenie tsentrioley k polyusam kletki - obrazovanie nitey veretena deleniya metafaza ii proisxodit po printsipu mitoza, no pri gaploidnom nabore xromosom: - xromosomi, sostoyashie iz 2 xromatid raspolagayutsya po ekvatoru kletki - niti veretena prisoedinyayutsya k tsentromeram (po odnoy s raznix storon) anafaza ii proisxodit po printsipu mitoza k polyusam rasxodyatsya dochernie xromosomi, sostoyashie iz odnoy xromatidi telofaza ii proisxodit po printsipu mitoza obrazuyutsya 4 gaploidnie kletki xromosomi v kajdoy iz kletok odnoxromatidnie biologicheskoe znachenie meyoza podderjivaet opredelennoe i postoyannoe chislo xromosom vo vsex pokoleniyax kajdogo vida jivix organizmov obespechivaet mnogoobrazie geneticheskogo sostava gamet v rezultate krossingovera i proizvolnogo rasxojdeniya razlichnix po proisxojdeniyu xromosom v anafaze i poyavlyaetsya raznoobraznoe i raznokachestvennoe potomstvo, chto imeet bolshoe znachenie dlya evolyutsii naydite oshibku, dopushennuyu xudojnikom raspolojite risunki po poryadku profaza ii metafaza ii anafaza ii telofaza ii telofaza ii sravnitelnaya xarakteristika mitoza …

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aza pered 2 deleniem prakticheski otsutstvuet, replikatsiya dnk ne proisxodit proisxodit konyugatsiya? net da, v profaze 1 proisxodit krossingover? net da, v profaze 1 xromosomi ili xromatidi rasxodyatsya pri delenii? xromatidi gomologichnie xromosomi skolko dochernix kletok obrazuetsya v rezultate deleniya? 2 4 izmenyaetsya li chislo xromosom v dochernix kletkax? net da kakie protsessi proisxodyat v kajdoy faze

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powerpoint presentation buxoro shahar abu ali ibn sino nomidagi buxoro davlat tibbiyot instituti davolash fakulteti 105-”a” guruh talabalari tomonidan “meyoz va uning biologik ahamiyati” mavzusidagi ko’rgazma namoyishi tsel uroka: rassmotret osobennosti meyoza sravnit mexanizm i biologicheskoe znachenie mitoza i meyoza * meyoz - osobiy vid deleniya kletki, pri kotorom chislo xromosom v dochernix kletkax stanovitsya gaploidnim proisxodit pri obrazovanii polovix kletok v 1882 g. valter flemming otkril meyoz u jivotnix v 1888 g. edvard strasburger otkril meyoz u rasteniy * mexanizm meyoza vklyuchaet dva posledovatelnix deleniya kletki, sleduyushix drug za drugom interfaza i meyoz i interfaza ii meyoz ii nakaplivayutsya energiya i veshestva neobxodimie dlya oboix deleniy meyoza reduktsionnoe d...

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