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The Future Of Males
Have you ever heard predictions that one day women will be able to have babies without men? It turns out that some species of the Whiptail lizard have figured out how to do this and completely eliminated the male sex.
Females Cloning Themselves
The females have the ability to lay eggs that hatch and grow into healthy lizards without needing to be fertilized by a male. The offspring are exact and complete genetic duplicates of the mothers.
Essentially the females are clonnig themselves.
Role Playing
If that weren’t enough, the female lizards take turns role-playing. They perform a mating ritual in which one lizard acts like the male, and the second lizard acts like the female. The ritual causes the lizard acting as the female to ovulate and lay her eggs. Then, a few weeks later, the two lizards switch roles and repeat this process so that the second female will be able to ovulate and lay her eggs.
Genetic Variation
It raises a lot of interesting questions. For example, it’s not clear how well an all female species can evolve and adapt to environmental changes. A species’ survival depends in part on variation among its members. If all the members of a species are identical, chances are greater that something like a change in the climate or a disease will wipe them all out.
雄性的未來(lái)
你是否曾聽(tīng)說(shuō)過(guò)某一天女性將不需要男性也可生小孩？事實(shí)上一些種類(lèi)的長(zhǎng)尾蜥蜴已經(jīng)可以做到這一點(diǎn)，并將全部的雄性完全消滅掉了。
雌性克隆自身
無(wú)須借助雄性受孕，雌性蜥蜴有能力產(chǎn)下可以孵化出健康的小蜥蜴的蛋。其后代完全是母親們基因的復(fù)制品。
這在本質(zhì)上是雌性在克隆自己。
角色扮演
如果這還不夠的話，雌性蜥蜴會(huì)輪流扮演角色。她們?cè)诮慌溥^(guò)程中，一只扮演雄性，另一只扮演雌性。交配將使扮演雌性的蜥蜴排卵產(chǎn)蛋。幾周之后，兩只蜥蜴互換角色重復(fù)交配過(guò)程從而使得另一只雌性得以排卵。
遺傳變異
這引發(fā)了許多有意思的問(wèn)題。例如，我們尚不清楚一個(gè)完全由雌性組成的種群在面臨環(huán)境變化是能否很好地適應(yīng)和進(jìn)化。一個(gè)種群的存在，部分地取決于其內(nèi)部成員的多樣性。如果一個(gè)種群中所有的成員具有同一性，那么當(dāng)環(huán)境劇變或疾病肆虐時(shí)，它們的滅絕概率也將更大。
The Future Of Males
Have you ever heard predictions that one day women will be able to have babies without men? It turns out that some species of the Whiptail lizard have figured out how to do this and completely eliminated the male sex.
Females Cloning Themselves
The females have the ability to lay eggs that hatch and grow into healthy lizards without needing to be fertilized by a male. The offspring are exact and complete genetic duplicates of the mothers.
Essentially the females are clonnig themselves.
Role Playing
If that weren’t enough, the female lizards take turns role-playing. They perform a mating ritual in which one lizard acts like the male, and the second lizard acts like the female. The ritual causes the lizard acting as the female to ovulate and lay her eggs. Then, a few weeks later, the two lizards switch roles and repeat this process so that the second female will be able to ovulate and lay her eggs.
Genetic Variation
It raises a lot of interesting questions. For example, it’s not clear how well an all female species can evolve and adapt to environmental changes. A species’ survival depends in part on variation among its members. If all the members of a species are identical, chances are greater that something like a change in the climate or a disease will wipe them all out.
雄性的未來(lái)
你是否曾聽(tīng)說(shuō)過(guò)某一天女性將不需要男性也可生小孩？事實(shí)上一些種類(lèi)的長(zhǎng)尾蜥蜴已經(jīng)可以做到這一點(diǎn)，并將全部的雄性完全消滅掉了。
雌性克隆自身
無(wú)須借助雄性受孕，雌性蜥蜴有能力產(chǎn)下可以孵化出健康的小蜥蜴的蛋。其后代完全是母親們基因的復(fù)制品。
這在本質(zhì)上是雌性在克隆自己。
角色扮演
如果這還不夠的話，雌性蜥蜴會(huì)輪流扮演角色。她們?cè)诮慌溥^(guò)程中，一只扮演雄性，另一只扮演雌性。交配將使扮演雌性的蜥蜴排卵產(chǎn)蛋。幾周之后，兩只蜥蜴互換角色重復(fù)交配過(guò)程從而使得另一只雌性得以排卵。
遺傳變異
這引發(fā)了許多有意思的問(wèn)題。例如，我們尚不清楚一個(gè)完全由雌性組成的種群在面臨環(huán)境變化是能否很好地適應(yīng)和進(jìn)化。一個(gè)種群的存在，部分地取決于其內(nèi)部成員的多樣性。如果一個(gè)種群中所有的成員具有同一性，那么當(dāng)環(huán)境劇變或疾病肆虐時(shí)，它們的滅絕概率也將更大。