Ke mitosis, lona mekhahlelo, mefuta e 'me o ananela boiteko boo

Nakong ea mesebetsi ho ikatisa ea lintho tse phelang ho na le li-cell karohano. Mitosis - ke mokhoa o tloaelehileng haholo oa ho ikatisa lisele tse eukaryotic ka karohano bona e sa tobang. karolo ea lona tsa likokoana-hloko ke esita le kabo ea chromosomes pakeng nuclei morali latellanang hore etsa bonnete ba sebopeho sa e tsoanang le liphatsa tsa lefutso le mefuta ea lisele le ho etsa bonnete ba polokeho ya lesikeng la lefutso melokong latellanang tsa liseleng.

mitosis ke eng? Ke motheo thulaganyou e motho ntshetsopele ya phelang le phetoho lona latellanang mabapi morphological, fisioloji le skeletal, e leng, ka aggregate, ke ontogenesis. Ka lebaka miotic karohano eketsa palo ea baahi ba lisele tsa vegetative se hlahang ho yona. Karolo ea lehe kopana le tsoelo-pele ea boholo ba lisele phoofolo e hlaha ka molao-motheo e tšoanang.

Mohato miotic karohano

The nako ya mitosis dinama tse nyenyane tse phoofolo nka ho fihlela ho metsotso e 60, ka dimela lisele tse - ho fihlela ho dihora tse 3. Mitosis le mohato e thehiloeng thepa morphological tlas'a maemo ka aroloa linako 5, e le hore liropo ho beha seo mitosis:

1. Prophase - mohato miotic karohano bontšang spiral chromosomes tsa chromatids pedi sethusathuto tšoanang, lateloa ke sebopeho sa mitosis.

2. prometaphase - konokono khetla nako ya disintegration potlako ka likarolo tse nyenyane tse le tsoanang ho reticulum endoplasmic.

3. Metaphase - miotics tsoelang pele karohano seleng ea sethaleng, e bopilweng ka linako tse peli: metakineza - mahloriso chromosomes ka leakage radiation mitotic ka mokgwa wa poleiti equator - le karohano ea chromosomes ka chromatids.

4. Anaphase - hore ho itingoe lijo fission mohato e leng nakong eo chromatids ba arohane le ho aba ho lipalo tse fapaneng. Sena se etsahala metsotso feela e seng mekae.

5. Telophase - sethaleng e qetellang ea mitosis, eo ho eona mokhatlo oo o ile a khaotsa ho ka nako chromosomes ho roba sethusathuto myotic di thehoa morali nucleoli, lera ea nyutlelie Ho thehoa le ho e arohane seleng ea 'mele oa ka diyuniti tse pedi tse ikemetseng.

mefuta mitosis

mitosis ke eng le hore na ke tlhophiso ea eona? More toba, ho ka etsahala hore ho thehoe mokhoa ho fumana mofuta oa eona. Fuoa khethehileng e ikhethang ea mitosis, e bontša ka boeona e ka lihlopha tse fapaneng tsa karohano, mefuta e itseng ea systematization, o sebetsang ho taxa se le seng, ke ke tsa bapisoa le ba bang. E 'ngoe ea litšobotsi tse senotlolo sebelisoa ka eaba ba etsa le typology ea nkang khato ba bath ea enfelopo le tsa nyutlelie, tseo se arohane ka tlhompho ho khanna mefuta e meraro ea mitosis:

1., 屋内 mitosis tšoauoa ka hore ho thehoe oa leakage radiation le karohano morago ga moo e le hlaha ka ntle ho timetsa enfelopo lona hara khubung ea.

2. Outdoor mitosis laolwang ke disintegration ea lera nyutlelie nakong karohano seleng.

3. Semi-koaloa mitosis. Seo mitosis tsa mofuta ona ka ho ikemisetsa ho tloha bola enfelopo feela miotics leakage radiation lipalo, le sebopeho consequent tsa "lifensetere polarity."

E mong bath hlalosang tsa mofuta mitotic leakage radiation o sebeletsa e le mofuta ofe setshwani. Mabapi le tšobotsi ena ea bopa dikgopolo tsa mantlha baeloji arolelana:

- plevromitoza (ha leakage radiation symmetrically kapa asymmetrically na le likarolo tse peli);

- ortomitoza (ha lemoha setshwani ferekanyang leakage radiation le Ho thehoa ka metaphase equator poleiti).

e bolelang mitosis

Nakong mitosis le hlaha ho ikatisa lisele tse le tsoanang. Ke sesebelisoa bohlokwa bakeng sa ho pholosa sete ya chromosome. Karolo e ka sehloohong ea mitosis taba ea ho kopitsa boitsebiso bo liphatseng tsa lefutso. Tshebetso ena e ama kgolo le ntshetsopele, motsamao oa lisele tse, nchafatso le diplobiont.