Tafriqashavi chist?

Tafriqashavi ravandi paydoishi tafovut va ziyod shudani sokhtor va vazifa dar bayni hujayrahoi alohida va qismhoi janin meboshad. Az nuqtai nazari morfologi tafriqa shudan – ba vujud omadani sadho nav hujayraho, ki sokhtorashon makhsus va az hamdigar farqkunanda meboshad.

Az nigohi biokhimiyavi boshad, tafriqashavi – makhsus gardidani hujayraho bahri sintezi safedahoi muayyan meboshad, ki bo hamon navi hujayraho khosand. Masalan, dar pust, dar hujayrahoi epiteliya keratin sintez meshavad. Dar eritrositho – gemoglobin, dar hujayrahoi boftai gadudi zeri meda insulin va gayra sintez meshavad.

Makhsusgardii biokhimiyavii hujayra faoliyati farqnamoii genhoro tamin namuda, dar hujayrai bargakhoi janini, ki ba uzvho va sistemahoi muayyan ibtido meguzorand ba tafovut hosil kardani genho musoidat menamoyand. Dar natijai tafriqai hujayrai bargakhoi janin az hisobi ektoderma silsilai asab, uzvhoi his, pust, siri dandon ba vujud meoyad. Az entoderma boshad, rudai mobayni, ga-

dudhoi hazmi khurok, jigar va gadudi zeri meda, galsama va shush, az mezoderma – boftai mushaki, boftai payvandi, sistemai gardishi khun, gurdaho, gadudhoi jinsi va gayra tashakkul meyoband. Dar jonvaroni gunogun az bargakhoi yak-khelai janin uzvu boftahoi yakkhela ba vujud meoyand. In daleli monandii onhost.

Monandii bargakhoi janini aksari hayvonot isboti yagonagii olami hayvonot meboshad.