Ontogenesis - he kaʻina hana me ka pakele?

Ontogenesis - ka hooulu ana o ka manaʻo, hookahi kanaka. Kēia kaʻina uhi i ka wā mai o ka manawa gametes i huiʻia, a me ka make ana o ka meaola. Këia a pau i kēia manawa apo developmental kālaimeaola. Ke ontogeny o nā mea kanu a me nā holoholona ia lŘlŘ okoa i loko o kā lākou okoa taxonomic pūʻulu.

E like me ka hapa o keia 'atikala discusses ka hooulu ana o multicellular holoholona. ʻOiai nā kuʻina ka papa kuhikuhi o ka ontogeny, kona mau lauana e ano o ka mea kanu.

Ua hoʻomaka me ka manawa, i ka wa o ka hua manu ua fertilized ma sperm, a haʻalele 'ē hana. A laila, ua hoʻomaka e wawahi i ka mai,ʻo ia hoʻi, he mea i mahele i loko o kekahi mau liʻiliʻi keena. A hiki aku i ka helu o kekahi mau haneri paha i na tausani, a hoʻololi i ke kinona o ka embryo. Ma ka mea hele mai i ke kumu o nā nā loko. Ma ka embryos o vertebrates kuhikuhi i hana liʻiliʻi, Central ko mākou hopohopo nenoaiu, chord, nāʻiʻo, a no laila, ma luna o. N. Ua kapaia ka luna 'ana o kēia mau keʻano o ka hanaʻana morphogenesis.

Ma hope o ia, a me ka poʻe me ka germ aeee e hoʻopale hiʻona i ae e differentiate ia mai kekahi i kekahi ma ka Nine Inch haku mele 'ana,' ole, shape.

E like me ua oleloia, ontogenesis - he kaʻina hana e mau ai ka fetus e e hanau ma hope o (a hoʻomoe). Eia kahi mea akaka ma keia kahua o ka metamorphosis (no ka poe kanaka, ka poe ikea ai ke kahua larvae), ulu, noke ke hōʻano hou i ka halepaahao paia o ka naʻau liʻiliʻi, lymphoid nā loko, i ke koko. kūnewa kaʻina haawiia i ontogenesis, i nā mea a pau nä känaka 'epekema.

He aha koa hoomalu aku ia i ka luna 'kaʻina? Oiai ka mea, aohe kupono pane i kēia mea. Naʻe, i kekahi nui regularities o ontogenesis i hoʻouka kekahi.

Mua, pono launa pū 'loa a pau germ keena. Kēlā me kēia kekahi "ike" e pili ana i wahi i ka mea, ua noho ai. No kekahi laʻana, ina e kāpae i kekahi mea uuku hapa mai o ka pau embryo, i koke hoʻomaka keena ka i koe, e hoʻomōhala okoa e like me ka maʻamau kulana. Ma keia ala, ma ka liʻiliʻi loa hapa 'ia' hoʻopau i ke kina, a laila, i ka embryo ke hoʻomōhala maʻamau. Paha aeee "manawalea ana mai iaʻu" me kekahi i kekahi ma ka pili membranes.

Ka lua, o ka loa mua kumu i loko o ka embryo i keiki ma luna o kekahi i kekahi, oiai e hooikaika ana i ka hooulu ana i loko o ka haawi mai ai ka ao ao. No ka laʻana, ma vertebrates keia e wahi like penei. Ke kumu o ka chord (notochord) e loli ai i ka ili o ka embryo nā'aʻaʻa i hele mai ma ka hui 'ana me ia, a ua hooluolu mai ia i lilo i ke kumu o ka Central ko mākou hopohopo nenoaiu. Na hana kūleʻa ma kālaimeaola ua kapaia embryonic hoʻokomo. Kekahi o kēia mau ololi, a me ka luna-i oleloia, i kapa 'ona i eiei mai kekahi i ka mea'ē aʻe germ. 'Ē aʻe e hiki ole me ka hui' ana ma waena o na keena o ka primordia e launa pū '. No ka laʻana, hoʻokomo o kekahi lala ma amphibians ua kena ae la ma ka diverting ke aʻalolo pau ana paha embryo transplantation ma lalo o kaʻili o ka'āina'ē kino.

Eia hou, ke kelepona hele specialization ololi ka hoʻololi kemikala o kumuʻiʻo, ka'aminoʻakika kaʻina ma i ka'ōewe ua nānā 'ia e hōʻike degere. No ke aha la i hana ole a pau o ia mau mea, hoi, Uaʻike.

No laila, ontogenesis - ia mea he kaʻina mea nō,ʻo ka noonoo ana o nā kānakaʻepekema,ʻaʻole wale biologists a me mathematicians, chemists, physicists. Ka mea, ke imi nei e hana i ka pähola 'ana i ka hooulu ana o ka meaola ola, a laila, e kōkua i ka hana i ka helu o nā discoveries. Ma hope o nā mea a pau, e nana i ka ontogeny - ia 'o ia hoʻi,ʻaʻole wale nō e theorize. Keia hana, he nui mea hiki nui, mahope mai o ka hoʻoholo 'ke kōkua ma ka iapaau ana o malignant hikoko a me nā deviations mai maʻamau kūpono' ana, e kahu ai i ka ulu ana o na holoholona a me nā mea kanu, ma ke kaua ana i ka palapala? Aneie ololi.