Individual species has a certain ability to parthenogenesis.
个别品种具有一定的孤雌生殖的能力。
Parthenogenesis is so far known to occur in about 70 reptile species.
迄今已知大约70种爬行动物有单性繁殖行为。
The offspring through parthenogenesis of E. americanus are all male.
美棘蓟马孤雌生殖产生的子代个体均为雄性；
That could explain why parthenogenesis reproduction has emerged in so many species.
这就可以解释为什么这么多物种都会有孤雌生殖现象。
That could explain why parthenogenesis reproduction has emerged in so many species.
这就可以解释为什么这么多物种都会有孤雌生殖现象。
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