Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar haihuwa: Kusan dukan dabbobi suna yin amfani da wata hanya ta haihuwa. Suna samar da gametes na haploid ta hanyar meiosis; ƙananan, gametes masu motsi sune spermatozoa kuma mafi girma, gametes marasa motsi sune ƙwai. Wadannan suna haɗuwa don samar da zygotes, wanda ke ci gaba ta hanyar mitosis a cikin wani wuri mai banƙyama, wanda ake kira blastula. A cikin sponges, larvae na blastula suna yin iyo zuwa wani sabon wuri, suna jingina zuwa ga teku, kuma suna girma cikin sabon soso. A yawancin sauran kungiyoyi, blastula yana fuskantar sake tsari mai rikitarwa. Da farko ya shiga ciki don samar da gastrula tare da ɗakin narkewa da kuma nau'ikan kwayoyin halittar guda biyu, ectoderm na waje da endoderm na ciki. A mafi yawan lokuta, wani nau'i na uku, mai suna mesoderm, yana tasowa a tsakanin su. Wadannan yadudduka na kwayoyin halitta sun bambanta don samar da kyallen takarda da gabobin jiki. Sau da yawa lokuta na yin jima'i tare da dangi na kusa a lokacin haifuwa na jima'i yakan haifar da damuwa a cikin yawan jama'a saboda karuwar halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen halayen Dabbobi sun samo hanyoyi da yawa don kauce wa kusanci. A cikin wasu nau'ikan, kamar su fairywren masu ban mamaki (Malurus splendens), mata suna amfana ta hanyar haɗuwa da maza da yawa, don haka samar da ƙarin zuriya na ingancin kwayar halitta. Wasu dabbobi suna da ikon haifuwa ta hanyar jima'i, wanda sau da yawa yakan haifar da kwayar halittar mahaifa. Wannan na iya faruwa ta hanyar rarrabuwa; budding, kamar a cikin Hydra da sauran cnidarians; ko parthenogenesis, inda ake samar da ƙwai masu amfani ba tare da yin jima'i ba, kamar a cikin aphids.  Tambaya: Ta yaya dabbobi da yawa suke haihuwa?
haifuwa ta hanyar jima'i