Haɗuwar ƙwayoyin halitta / Kafuwar ciki
 fertilization | |
|---|---|
biological process (en)  | |
 | |
| Bayanai | |
| Ƙaramin ɓangare na |
reproductive process (en) da anisogamy (en) |
| Bangare na |
sexual reproduction (en) |
| Uses (en) |
gametes of opposite sexes (en) |
| WordLift URL (en) | http://data.medicalrecords.com/medicalrecords/healthwise/fertilization |
Fertilization ko fertilization (duba bambance-bambance na rubutun kalmomi), wanda aka fi sani da fertilization, syngamy da impregnation, [1]shine haɗuwa da gametes don haifar da zygote kuma fara ci gabanta a ciki sabon kwayoyin ko zuriya. Duk da yake matakai irin su insemination ko pollination, wanda ke faruwa kafin haɗuwa da gametes, ana kuma kiran su a wasu lokuta ba bisa ka'ida ba a matsayin taki, waɗannan matakai ne na fasaha. Tsarin fashewa da ci gaban sabbin mutane ana kiransa haihuwar jima'i. A lokacin ninka sau biyu a cikin angiosperms, gamete namiji na haploid ya haɗu da ƙwayoyin ƙwayoyin cuta guda biyu don samar da ƙwayoyi na farko na endosperm ta hanyar tsarin ninka.
Bincike
[gyara sashe | gyara masomin]A zamanin d ̄ a, Aristotle ya ɗauki nauyin kafa sabbin mutane ta hanyar haɗuwa da ruwa na namiji da na mace, tare da tsari da aiki da ke fitowa sannu a hankali, a cikin yanayin da ya kira shi epigenetic.[1]
A shekara ta 1784, Spallanzani ya kafa bukatar hulɗa tsakanin kwai na mace da maniyyi na namiji don samar da zygote a cikin kwari.[1] A cikin 1827, Karl Ernst von Baer ya lura da kwai mai shayarwa a karo na farko. Oscar Hertwig (1876), a Jamus, ya bayyana haɗuwa da ƙwayoyin maniyyi da ƙwayoyi na urchins na teku.[2]