Menene halaye na tsarin jinsin namiji?
Saboda haka, spermatozoa, saboda gaskiyar cewa dole ne su sami babban motsi don hadi, su ne kananan kwayoyin halitta, wanda jikinsa yana elongated. Sperm, da bambanci da ovum, ba shi da yawancin cytoplasm. Ya ƙunshe da ɓangaren ɓangaren da aka kira shugaban, da kuma flagellum (wutsiya), wanda shine sashin motsi. Daga abin da ake kira subcellular structures a cikin spermatozoon, akwai mitochondria cewa samar da shi da makamashi da ake bukata don motsi, da acrosomal vacuole (dauke da enzymes don dissolving envelopes na cikakke kwai), da kusacin tsakiya. Jimlar tsawon spermatozoon yana kan 60 μm, wanda wutsiya ne 55 μm.
Idan aka bar glandon jima'i, jigidar, kwayar halitta ba ta da ɗabace, wato. ba su da motsi, amma an tsara su ne a jiki. Saboda haka, ba su da ikon yin takin. Kunnawa na jima'i jima'i na faruwa a cikin tsarin fashewar jini.
Waɗanne siffofi na tsari sune halayyar kwayar cutar mace?
Yarinyar kwayar cutar mace, da kwai, ba kamar spermatozoon ba, yana da girma a girman kuma ba shi da motsi. Tsarinta ya kai 100-200 microns a cikin mutane. Wannan shi ne wani ɓangare saboda gaskiyar cewa shi ne kwai wanda shine ajiya don haɗin haɗin gwal, wanda wajibi ne don ci gaba da amfrayo a farkon matakai. Har ila yau, yawancin tsarin tsarin cytoplasmic a cikin abun da ake ciki shine ake buƙata domin samin jinsunan farko na jikin jinsin halitta - blastomeres.
Kwayar kwai, wanda ya bambanta da spermatozoon, yana da babban nau'i mai mahimmanci, wanda euchromatin (nucleoprotein da ke kusa da tsakiya na tsakiya, mafi girman kai, wanda ke da alhakin canja bayanan kwayoyin halitta) yana rinjaye kuma yana dauke da adadin cytoplasm. A daidai wannan lokaci mitochondria a cikinta sun kasance a ƙasa da yawa, wanda ya haifar da ƙananan motsi na jima'i jima'i. Har ila yau, ya kamata a lura da cewa jinsin jima'i na mace bazai wanzu ba. Bambancin zai iya zama, watakila, mataki na farko na samfurin su, a matsayi na ogony. Yawancin lokaci, kwayoyin suna kusa da haɗarin sel, wanda, a gaskiya, samar da haɗin da kuma epithelial membrane kewaye da kowace mace mace. Wannan hadaddun an kira shi 'yar jaririn ovarian. Tsarinsa yana da rikitarwa a cikin aiwatar da oogenesis .
Duk bambance-bambance na kwai daga maniyyi ba za'a iya sanya shi a teburin ɗaya ba, don haka waɗannan su ne kwayoyin halitta biyu.
Mene ne babban bambance-bambance tsakanin kwayoyin germ?
Bayan ya fada game da abin da qwai suke da bambanci da spermatozoa kuma me yasa, don haka, ina son yin lissafin abubuwan da suka bambanta. Daga cikinsu akwai:
- samfurin chromosome (a cikin spermatozoa - X chromosome, a cikin oocytes - U);
- daban-daban na nukiliya-cytoplasmic rabo (high a spermatozoon, low in kwai);
- size da kuma siffar (manyan kuma tasowa akan kananan da elongated);
- Jirgin yana da ɓangaren motsi.
Sabili da haka, ana iya bayyana cewa bambance-bambance daban-daban na spermatozoon daga cikin kwai suna cikin tsari, saboda darajar halittu da aka ba su.