哈市三院打胎可靠吗新华对话

明星资讯腾讯娱乐2019年06月27日 12:13:37
0评论
6:市内观光 69

  

  。

  Thanks to modern technology and air travel, the world is ever becoming a smaller place. Where journeys from one continent to another once took months, they now take hours, and sometimes it seems like there is nowhere left a would-be adventurer to really get away from it all. Still, if you have the time, money, and know-how, there are still some places off the map—or just barely on it—that remain shrouded in mystery simply by virtue of being really difficult to reach. Whether mining camps at the top of the world, or tiny islands thousands of miles from civilization, the following are the top most remote places left on planet Earth.随着现代科技和空中旅行方式的发展,这个世界越来越小从一个国度旅行到另一个国度,曾经需要数月,现在仍需几个小时对于一名准冒险家来说,时间是个不小的问题此外,如果你有时间、金钱、经验,总可以找到地图上没有的地方——或者仅有标注的地方——由于难以到达而依然戴有神秘的面纱其中既有位于世界之巅的采矿营地,也有距离文明社会数千英里的袖珍小岛以下便是地球上大最遥远的地方.Easter Island.复活节岛Located some ,000 miles west of the Chilean Coast, Easter Island, or Rapa Nui, is a tiny island that has become famous its remarkable isolation in the vastness of the Pacific Ocean. It is relatively small, measuring roughly seventy square miles in size, and is today home to around ,000 people. The island has become well known the massive rock sculptures called Moai that dot its beaches. They were carved sometime around the year 00 by the island earliest inhabitants, and it has been said that the massive wood sleds needed to transport them from one place to another are a big part of what led to the almost total deestation of Easter Island.复活节岛,又称拉帕努伊岛,是一座位于智利海岸以西00英里以外的袖珍小岛在广袤无垠的太平洋中,它凭借作为一座与世隔绝的袖珍小岛而著称它相对很小,面积约70平方英里,大约是000多人的故乡岛上的大型石刻举世闻名,叫做;艾石像;,散布沙滩它们是由岛屿最早的居民在00年左右雕刻的据说,需要使用大量的木质雪橇把它们从一个地方运输到另一个地方,这也是导致复活节岛树木几乎全部被砍伐的很大一部分原因Scientists have argued that the island was once lush and tree-covered, but today it is relatively barren, a feature that only adds to the sense of sheer isolation that is said to overtake most first-time visitors. When the first settlers migrated to the island, the journey took several weeks, but today there is a small airport (reportedly the most remote in all the world) that carries passengers to the island by way of Santiago, Chile.科学家们争论,复活节岛曾经树木葱郁,如今却相当贫瘠这只会增添与世隔绝之感,大部分第一次来这里的游客都有这样的感受最初人们迁移到岛上时,需要几个星期时间;现在有了一个小型机场(据说是世界上最偏远的),飞机借道智利的首都圣地亚哥把乘客送到岛上9.La Rinconada, Peru9.秘鲁,拉林科纳达 sheer inaccessibility, few locations in South America compare to La Rinconada, a small mining town in the Peruvian Andes. Located nearly ,000 feet above sea level, La Rinconada is considered the ;highest; city in the world, and it is this stunning geography that makes it so desolate. The city is located on a permanently frozen glacier, and can only be reached by truck via treacherous and winding mountain roads. Just reaching the city takes days, and even then altitude sickness, combined with the shantytown deplorable condition, means that few people can handle living there long. Still, the town is said to have as many as 30,000 inhabitants, almost all of whom are involved in the business of mining gold, which is extracted from beneath the ice inside nearby caverns.就南美洲人迹罕至、难以到达之地而言,少有可与拉林科纳达相比的地方它是秘鲁安第斯山脉中的一个矿业小镇,海拔1万7千英尺,被公认为;世界最高城市;正是它独特的地理位置使其人烟稀少这座城市位于一片永久冰川之上,只有卡车才能到达,还要经过充满危险的蜿蜒山路仅仅到达这个城市就要花上数天的时间,甚至还有高原反应,再加上临时棚屋简陋的条件,这就意味着很少有人可以在这里长期生活可是,据说这个小镇的居民竟然多达3万,近乎所有人都参与了开采金矿的活动,从洞穴附近的冰块中挖取黄金In addition to its remoteness, La Rinconada has gained a dubious reputation as a destination poor and desperate workers, many of whom work the mines free in exchange the right to keep a small percentage of the gold ore they find.除了偏远之外,拉林科纳达成为了穷人和绝望的工人所向往的地方,而这一荣誉尚存争议许多人无偿开矿,希望能够保留一小部分他们找到的黄金矿石8.McMurdo Station, Antarctica8.南极,麦克默多站Located literally at the bottom of the world, Antarctica is easily one of the most remote places on the face of the Earth. There are no native inhabitants to the continent, but there are several research centers constantly in operation there, and of these McMurdo Station is the largest. Located on Ross Island near the northern tip of the continent, the almost perpetually frozen station is a center of international research, and is home to as many as 1,0 scientists and workers during the warmer summer months.毫不夸张的说,南极洲位于世界的底部,是地球表面最偏远的地区之一这片大陆上没有原住民的居所,却有许多运行中的考察站存在,而麦克默多站正是其中最大的一个坐落在罗斯岛上,接近南极大陆的最北点,这个几乎终年封冻的考察站是一个国际考察中心站,在暖和的夏季,它也是00多个科学工作者的家It one of the most desolate locations on the planet, but although McMurdo is as far from a major city as any location in the world, even it is no longer as backwater as it used to be. Trips by boat to Antarctica once took months, sometimes even years, but McMurdo three airstrips have helped make the region a much less remote destination than bee. Thanks to this, the scientists at the station now enjoy many of the modern amenities found in major cities, including gyms, television, and even a nine-hole Frisbee golf course.麦克默多是地球上人迹罕至的地方之一,尽管它像世界上其他远离主要城市的地方一样偏远,它也不再是从前那个荒僻之地了乘船去南极旅行一次需要数月,有时甚至需要好几年才能到达,但麦克默多已开通三条航线,这就使得它跟从前相比,要好到达得多正因如此,麦克默多站的科学家们现在能够享受到许多来自大城市的现代化设施,包括健身房、电视,甚至还有九洞高尔夫球场7.Cape York Peninsula, Australia7.澳大利亚,约克角半岛Australia is known both its extremely low population density and untouched natural beauty, both of which are best exemplified by Cape York, Peninsula, a huge expanse of untouched wilderness located on the country northern tip. The region has a population of only 18,000 people, most of whom are part of the country aboriginal tribes, and it is considered to be one of the largest undeveloped places left in the world. This helps contribute to its stunning natural beauty, but it also makes Cape York about as difficult to reach as any destination in Australia.一直以来,澳大利亚都以其超低的人口密度和原汁原味的自然风光闻名世界,而位于澳大利亚极北点的一片广袤的纯天然荒原之地——约克角半岛,显然是展现澳大利亚这两个著名特征的最好例子约克角半岛地区有18,000的人口,大部分都是澳洲原住民,同时,该地区也被认为是世上遗留的面积最大的处女地未被开发虽然使得约克角半岛拥有令人惊讶的自然美景,却也让它成为了澳大利亚最难到达的地方The peninsula has become a popular destination adventurous tourists, who drive jeeps and trucks down the unpaved Peninsula Development Road whenever it isnt closed due to flooding during the rainy season. But even with -wheel drive trucks, many of the more heavily overgrown parts of Cape York Peninsula are completely inaccessible, and some regions have still only been surveyed by helicopter.约克角半岛已经成为探险旅行者们最心仪的目的地了,只要那条没铺过的;半岛发展之路;没因为雨季洪水而关闭,他们就会开着吉普车和卡车从那条路进入半岛区域但是即使是开着四轮卡车,约克角半岛上许多植物蔓生的地方还是无法触及,甚至有的地区只能通过直升机探查6.Ittoqqortoormiit, Greenland6.格陵兰岛,依托克托洛米特At 836,000 square miles in size, Greenland is the world largest island, but its tiny population of 57,000 people means that it also the most desolate. And of all the towns in Greenland, perhaps none is as remote (or as difficult to pronounce) as Ittoqqortoormiit, a small fishing and hunting village located on the island eastern shore, to the north of Iceland. The town is part of a municipal district roughly the size of England, but it has a population of only slightly more than 500 people, meaning that each person technically has more than 0 square miles to call their own.面积达836,000平方英里的格陵兰岛是世界上最大的岛屿但是它的人口仅有57,000,这也意味着它是全球十分荒芜的地方在所有的格陵兰小镇中,也许没有比依托克托洛米特更偏远(名字更难读)的了依托克托洛米特位于格陵兰岛东部沿海、冰岛的北方,是一个以和狩猎为主的小村庄尽管这个镇所在自治区的面积与英格兰一般大,但它的人口却少得可怜,只有500多人这也意味着,理论上来说这里每个人都可以拥有超过0平方英里的土地Residents make their living off of hunting polar bears and whales, which are prevalent in the area, and by fishing Halibut during the warmer months. Ittoqqortoormiit lies on the coast, but the seas surrounding it are almost perpetually frozen, leaving only a three-month window when the town is easily accessible by boat. There is an airport some 5 miles away, but flights are rare. the most part, the town, one of the northernmost settlements in the world, is completely isolated in the vastness of the tundra.当地的居民以猎杀北极熊和鲸鱼为生,这十分普遍;而在温暖的月份,人们则会捕捉大比目鱼尽管依托克托洛米特濒临海岸线,但是四周的海洋几乎是永久性的,每年我们只有三个月时间能够较为容易地乘船登岛虽然在5英里以外的地方有一座机场,但是却少有航班在这里起降作为世界上最北部的居民区之一,依托克托洛米特的大部分地区都孤零零地处在广袤无垠的冻土地带之中翻译:梅子九 前十网 156

  Tax registration 税务登记A: My company is a eign investment group, and I would like to make tax registration.我们是一家外国投资集团公司,我们要进行税务登记B: No problem. Could you please pass me your business license? 没问题啊请出示一下营业执照A: Sure, here it is.好的,请看B: First I have a question, in what field or fields is your company engaged?首先请回答我一个问题贵公司是从事哪些领域的?A: Our enterprise is engaged in advertising field is your company engaged? 我们公司是从事广告方面的业务这和税务登记有什么关系吗?B: Please fill out this Registration m over there, the green one.请填写一下那边的表格,那个绿色的A: Excuse me; I have done with the m. What should I do next? 打扰一下,我已经填写完这份表格了,接下来我要怎么做呢?B: Go to the next window with this registration m and the staff members there will tell you what other materials you will have to hand in.带着这份表格到下一个窗口,那里的工作人员会告诉你还需要提供哪些材料A: OK, thank you. By the way, how much fee should I pay the registration? 好的,非常感谢对了,顺便问一下,税务登记需要交多少钱?B: It free of charge.是免费的;be engaged in;意思是;忙于,从事于;,例如:Can the import-export company be engaged in domestic business? 进出口公司可以做国内贸易吗? 5818A: Good morning. I had some questions about the fumigation letter we received.B: I am here to answer your questions. What do you need clarification on?A: Will I have to find somewhere else to go on that day?B: You cannot stay in your apartment 36 hours while it is being fumigated.A: Are you going to pay us the hotel room you mentioned in your letter?B: The rooms have aly been reserved and paid .A: If I donrsquo;t like that hotel, can I stay somewhere else?B: I got a great deal at this hotel, but you can choose a room of equal or less value at another hotel.A: I have my pets to think of and Id rather stay with my parents.B: You will be given fifty dollars the night.A: What else do we need to think about?B: The letter also tells you about storing and removing your food. 96

  

  

  A woman has given birth to her own grandchild by having a surrogate baby her daughter.一名母亲为自己的女儿,亲自生下了自己的外孙Julie Bradd, 5, had baby Jack daughter Jessica Jenkins, whose cancer treatment left her infertile.5岁的朱莉·布拉德福德于日前为因患癌症接受治疗无法生育的女儿杰西卡·詹金斯生下了婴儿杰克Jessica, 1, from Rhymney, had her eggs frozen at Cardiff University Hospital of Wales bee her treatment cervical cancer began three years ago.来自拉姆尼的杰西卡今年1岁,三年前,进行宫颈癌治疗前,就把卵子冷冻在了威尔士的加的夫大学医院She said Jack, who was born last Friday weighing 6lb oz, was ;perfect in every way;.杰克于上周五出生,重6磅盎司,她表示“杰克非常完美”;My mam is the most brave and amazing woman in the world. I love her so much giving me my son,; Jessica said. ;From a young age I longed to become a mother and our dream has come true.;杰西卡说,“我的母亲是世上最勇敢最棒的母亲,给我生了这个孩子,我非常爱她很早以前我就渴望做一个妈妈,我们的梦想实现了”Jessica and her husband Rees decided to pursue IVF earlier this year after she had been in remission since the summer of .从年夏天开始,杰西卡的情况有所缓解,今年初,她和丈夫里斯决定寻求试管受精Jessica said: ;They managed to take 1 eggs bee I started chemo but only survived and they were made into embryos and grown two weeks then frozen. In May this year we had an embryo defrosted and implanted into my mother womb her to be the little oven helping our Jelly Bean grow.;杰西卡说道:“在我进行化疗前,医生设法取得了1颗卵子,但只有颗存活了下来,它们最终成为了胚胎,生长了周后被冷冻起来今年5月我们把胚胎解冻,然后植入了我母亲的子宫,把那儿当作一个小温室以帮助我们的小甜心成长”Julie said the last three years had been the ;absolute worst; but she had the chance to ;put things right;.母亲朱莉表示,最近三年真的很糟糕,但她有机会“让事情变好”She had felt useless while Jessica was ;in agony; with cancer, she said.她说,当女儿杰西卡在为癌症“痛苦挣扎”时,她觉得自己很没用;Ive always known from a young age Jess has longed to become a mother just like I did. When cancer took the chance away her to carry her own child we were all heartbroken. It had been ;an honour; to carry the couple child.;“我一直都知道杰西卡很早就希望做母亲,就像我一样可癌症夺走了她当母亲的机会,我们都十分悲痛所以非常“荣幸”能为这对夫妻孩子” 8180。

  

  8:游水 69

  No matter how it done, reproduction is weird, often wonderful and sometimes scary. Back in 00, Bill Joy, chief scientist at Sun Microsystems, wrote an in Wired magazine titled ;Why the Future Doesnt Need Us.; In it, he predicted that a catastrophic development was just around the corner: self-replicating robots. Once that eventuality had been reached, he feared, human life as we know it would shortly become irrelevant.且不论动物们是怎么做到的,它们繁衍后代的方式的确是千奇百怪多数奇妙有趣,有些却让人毛骨悚然遥想00年时,太阳计算机系统公司的首席科学家比尔·乔伊曾在《连线杂志上发表了一篇题为《未来不需要我们的文章,他预言自我复制机器人的产生这一灾难性变革近在眼前;他担心自我复制机器人面世之时,就是人类消亡之日But you dont have to look to the future examples of strange reproductive possibilities. In ancient Greece, Zeus, god of thunder and head honcho on Olympus, had a memorable encounter with childbirth. One day Zeus had a liaison with one Metis, goddess of craftiness. Too late, he remembered a prophecy that predicted Metis children would be more powerful than their father. Worried about the consequences, he quickly swallowed his lover whole. Of course, it was too late — she was aly pregnant. Sometime later, having developed a phenomenal headache, he got one of his fellow gods to chop his skull open with an axe. Out jumped his new daughter, Athena, goddess of wisdom, in full battle gear. All this might sound improbable, but it no stranger than some of the bizarre ways organisms are self-replicating in real life, right now.但若只是想找寻一些奇葩的繁衍方式,大可不必翘首未来,从过去的故事中即可窥知一二传说在古希腊,司掌雷电的奥林匹斯山主神宙斯,有过一次难忘的分娩经历某日宙斯临幸了慧聪女神墨提斯,事后他才忆起盖亚和乌拉诺斯的预言——墨提斯将生下比自己更强的孩子他心生惧怕,于是把墨提斯整个吞进了肚子可惜为时已晚,墨提斯此时已经怀不久,宙斯头痛难忍,便命令手下的神用斧头劈开他的头颅,他的女儿——全身武装的智慧女神雅典娜便跳了出来这一切听起来简直像是无稽之谈,即便如此,这也绝不会比现实生活中有些生物自我繁殖的方式更加奇怪那接下来就让我们一起来看看吧.Virginal Dragons.孤雌生殖的蜥蜴Maybe it because the reproductive process is so strange that humans have been telling stories about virgin births since storytelling began. The most famous of these tales is, of course, the one about the birth of Jesus Christ whose mother, Mary, is said to have conceived while still a virgin.或许正是因为繁衍后代如此神奇,“处女生育”的故事才会层出不穷,流传至今其中最出名的莫过于耶稣的降生,传说他的母亲——圣母玛丽亚怀时就是处女While it technically possible a woman to produce a virgin birth, it incredibly unlikely. On the other hand, parthenogenesis (the scientific term virgin birth) is common among other creatures in nature. Hammerhead sharks, komodo dragons, mole salamanders, and an assortment of other reptiles, fish and insects can all produce offspring without mating. It all starts with something called a ;germ cell.; This germ cell splits in two, and then each of those halves splits again. Now youve got four reproductive cells, called gametes. Three gametes are discarded. The remaining gamete contains half the chromosomes necessary to create a new individual. In sexual reproduction, a female gamete and a male gamete fuse, creating a complete set of chromosomes. But in parthenogenesis, the female gamete, or egg, contains a complete set of chromosomes and is able to stimulate itself to grow. Incredibly, there are species of insects that go back and th between parthenogenesis and sexual reproduction, depending on which method works best the environment theyre in at the time (e.g., is there a mate available?). Then there something called cyclic parthenogenesis in which organisms such as water fleas alternate back and th between mating and non-mating reproduction. As yet, nobody found any examples of parthenogenesis in mammals, but it been artificially induced in rabbits, among other critters, with the help of temperature control and chemicals. No luck with humans so far...尽管处女生育在技术上可行,但人们还是很难相信这个事实不过在自然界,生物体的孤雌生殖(处女生育的学名)十分普遍,锤头鲨、科莫多巨蜥、尔蝾螈和其他种类的爬行动物、鱼类以及昆虫都可以不经交配,直接繁殖这一切的过程都始于“生殖细胞”这种细胞可以一分二,然后二分四我们把得到的这四个生殖细胞叫做“配子”,其中的三个将被弃置,剩下一个则包含创造新生命所需的一半染色体在有性生殖中,一个雌配子和一个雄配子结合,就可以合成一套完整的染色体组但在孤雌生殖中,一个雌配子,或称为一颗卵子,即包含整套生物体所需的染色体,并能刺激自身生长,最终成为新的个体令人难以置信的是,不少昆虫能够从容游走于孤雌生殖和有性生殖之间,选择哪种繁殖方式完全取决于当时的环境(例如是否能找到异性交配)此外,还有一些生物遵循所谓的“周期性孤雌生殖”规律,例如水蚤就是交替进行孤雌生殖和有性生殖的截至目前,自然界中尚未发现任何哺乳动物进行孤雌生殖的例子但是通过温度控制和化学控制,已经成功实现人工诱导兔子以及其他小动物进行孤雌繁殖但人类至今无缘于此9.Revising Nemo9.雄雌变换的尼莫鱼Let not confuse parthenogenesis with hermaphroditic reproduction! Theyre not the same at all. In parthenogenesis, the female gamete does all the work single-handedly. Hermaphrodites, however, are remarkable being able to produce both male and female gametes. That because they have both male and female reproductive organs.别把雌雄同体和孤雌生殖搞混了!这是两个完全不同的概念孤雌生殖是指雌配子能独自完成所有生殖工作,而雌雄同体的奥妙则在于生物体同时拥有雄性生殖器官和雌性生殖器官,可以同时产生雌配子和雄配子In some species, like certain flowers, snails and fish, hermaphroditism is common. Sometimes an organism might start off male and turn female; sometimes they might start off female and turn male; and sometimes they remain both sexes throughout their lifespan. Remember Nemo and his dad in ;Finding Nemo;? It turns out a sequel is warranted because there a lot of drama in the reproductive lives of clownfish. Socially, clownfish like to hang out in sea anemones where two large breeders, a male and a female, are in charge of a group of smaller male clownfish who dont reproduce. But say, instance, the female breeder dies. In that case, the large male switches its sex to become the dominant female while the biggest of the small males quickly bulks up to take on the role of sexually mature male breeder. Come on Pixar — ;Becoming Nema; is a hit waiting to happen.有些物种的雌雄同体现象十分普遍,比如某些品种的花、蜗牛和鱼类它们中有些生而为雄,却可在日后变为雌性;也有些生而为雌,却可在后天转为雄性有些物种终其一生,都会同时具备双性特征还记得《海底总动员里的尼莫和他的父亲吗?这部电影出个续集还是很有必要的,你都不知道小丑鱼的繁殖是多么的有趣!一般而言,小丑鱼喜爱成群结队穿梭于海葵之间,除了领头的一对成年雄性和雌性小丑鱼负责生育外,其余均为不能生育的年幼雄鱼但比如说,领队的雌鱼去世了,那么领队的雄鱼就会变性,成为领队的雌性,同时,这群年幼的雄鱼里最强壮的那条就会迅速成长、成熟,成为领队雄性,担当生育大任皮克斯!快放大招把!我们都等不及想看续集里尼莫的父亲突然变成母亲了,那一定是个大卖点!8.Clutch Piracy8.偷盗卵子的雄蛙Clutch piracy is a breeding strategy that involves frogs sporting eye patches and wielding cutlasses while swigging rum.窃卵是一种繁殖策略,但乍一听还以为是青蛙蒙上运动眼罩,痛饮朗姆酒后手拿刺刀变身江洋大盗去偷盗卵子Actually, no it not. It does involve frogs, but theyre naked and they live in the Pyrenees, not Barbados. Their lack of clothes is important — high in the Pyrenees, the nights are so chilly that frogs, who typically like to mate under the cover of darkness, are ced to get busy on sunny afternoons instead. Thanks to this local peculiarity, researchers were able to keep a close eye on the process and observed a weird deviation from the usual ho-hum external fertilization they expected to see. External fertilization is the preferred reproductive strategy of many fish and amphibians. The female lays a ;clutch; of eggs in the water and then a male deposits some sperm on them. Frogs like to make sure this process is accomplished without delay. Typically when a female frog is y to lay her eggs, she lets a male climb on her back and give her a big bear hug. She releases her egg clutch, and the male immediately fertilizes it. However, his sperm might fertilize only a percentage of the eggs in the clutch. High in the ponds of the Pyrenees, frog romance works a little differently. Male frogs vastly outnumber the females. Because they often cant find a female to mate with, gangs of piratical males have taken to hunting freshly laid egg clutches. As soon as they find them, they do their best to fertilize any of the unfertilized eggs that are left. Researchers have found clutches with as many as four different fathers!事实上并非如此这确实与蛙类有关,但它们一种是生活在比利牛斯山脉而非巴巴多斯山脉,且皮肤裸露的蛙类他们“衣不蔽体”这一特点至关重要——因为在高高的比利牛斯山上,长夜如此寒凉,这些本喜好在夜幕笼罩下“造人”的蛙类,不得不将此事安排在阳光灿烂的午后多亏了此地得天独厚的地理条件,研究者们才能密切观察这一蛙类的受精过程,从而发现了这与他们平日里早已司空见惯的体外受精方式并不相同体外受精是鱼类和两栖动物首选的繁殖方式雌性动物在水中产下一“窝”卵,接着雄性动物再将精子排在卵子上青蛙们想要确保此过程不被延误,当雌蛙准备产卵时,就会让雄蛙爬到她的背上,给她一个大大的熊抱雌蛙排完卵后雄蛙立刻使其受精然而,这样的受精率可能只有1%左右在高高的比利牛斯山上的池塘里,青蛙们的浪漫情事却有所不同这里雄蛙的数目远超过雌蛙,所以经常找不到配偶,这就迫使雄蛙海盗团伙不得不到处寻找新产下的卵一旦找到卵堆,他们就会竭尽全力给其中的未受精卵受精研究者们曾发现一个卵堆中的受精卵竟有个父亲!7.Floral Deception7.“勾引”蜜蜂的蜂兰花Most flowers have an I-pat-your-back-you-pat-mine relationship with the pollinators that help them reproduce. Bees, butterflies and hummingbirds, instance, get a delicious sip of nectar in return carrying some grains of pollen from one flower to the next. Once this happens, the receiving flower can start the process of making the seeds that will grow into new flowers.大多数花儿和帮助它们繁殖的传粉者之间都保持着互帮互助的关系例如蜜蜂、蝴蝶、蜂鸟等动物,都会在为花儿传粉的同时吮吸一口甜美的花蜜作为回报此后,受粉的花朵就能逐渐结出种子,这些种子最终又能长成新植株But certain species of orchids find this strategy old hat, not to say downright boring. With pollinators hopping from one flower to its neighbor, orchids worry about inbreeding. Well, as far as we know, they dont actually worry, but evolution has resulted in a far more novel — in fact truly bizarre — method of self-replicating these organisms. In mountainous regions of the Mediterranean, there a species called Ophrys apifera, better known as the bee orchid. In an incredible trompe loeil effect, the flower looks precisely like the rear of a female bee with its head buried in a blue-petalled flower. Not only that, Ophrys mimics the scent of said female bee, and it even a little furry to add to the sensory illusion. This deception is so perfect that even its seeming imperfections turn out to be advantageous. Male bees, seduced by the floral wizardry, fall to mating so vigorously with the flowers that they dislodge pollen packs pre-loaded with a special adhesive that sticks to their backs. But according to plan, the deception only lasts so long. After some frantic efts at achieving erotic bliss, the bee wises up to the fact that he been had and staggers away in a fit of frustration. Hell wander a fair distance collecting his wits bee he falls the trick again and, if all goes well perfidious Ophrys, unwittingly deposits his pollen payload in another bee orchid flower. The bee frustration plays into the orchid reproductive strategy, as the distance traveled while the bee was cooling his temper prevents inbreeding. Of course, bees arent the only ones seduced by orchid magic — think of all the orchid plants flowering on windowsills the world over.这种繁殖方式虽说不上无聊透顶,但某些品种的兰花却嫌弃它过于老套传粉者们在临近的花朵间不停地忙碌着,但兰花们却担心近亲交配的发生尽管我们知道他们并不会真的为此担心,但生物进化已然催生了更为新颖(实际上超级怪异)的自我繁殖方式,以适应这些生物的需求在地中海沿岸的山区,有一种植物叫蜂兰花,而人们更喜欢叫它蜜蜂花在视觉陷阱的效应下,这种花看起来真的很像把头埋入蓝色花瓣中,只留背部在外的雌蜂此外,蜂兰花还能释放与雌蜂类似的气味,甚至还长有绒毛,使其看起来毛茸茸的,更加深了这种感官错觉这种骗术如此完美,甚至使它那外观上的缺陷都转变成了优点被蜂兰花的幻术吸引而来的雄蜂争先恐后地与花朵交配,预先带有特殊粘性的花粉便会粘在雄蜂背上但是照原计划,骗术只能维持这么久雄峰在为了满足性欲对蜂兰花实施了残暴的摧残后,才意识到自己上当了,于是带着失落,步履蹒跚地离开雄蜂会飞行很长的一段距离来“疗伤”,直到下次掉入陷阱对始作俑者蜂兰花来说,如果一切顺利,雄蜂负载的花粉就能不知不觉地落在另一朵花上于蜂兰花而言,雄峰的失落正中下怀,因为雄蜂在冷静的过程中飞得越远,就越能防止蜂兰花的近亲交配当然,想想看那开在窗台上千姿百态的兰科植物,全世界有那么多种类的兰花,蜜蜂并不是唯一一种被它们的魔法吸引的动物6.Multi-gendered Mating6.多种性别的四膜虫Next time you cool off in a lake, try not to think about the fact that you might be surrounded by furry single-celled microbes engaging in some truly peculiar reproductive behavior. Actually, the most part, Tetrahymena is quite a chaste creature that uses the virginal method of parthenogenesis to populate its fresh-water environs.下次你在湖边乘凉时,请尽量忘记以下事实——n多毛茸茸的单细胞微生物正在你周围进行一些非常奇异的繁殖活动事实上,多数情况下四膜虫是一种非常纯洁的生物,它们采用贞洁的孤雌生殖方式在其生存的淡水中产下自己的后代But parthenogenesis doesnt create the kind of genetic variation that can help organisms adapt to changing surroundings. So when times are tough, Tetrahymena can actually switch on a dormant sex drive to help it survive. That when things get very interesting. If you think keeping track of gender politics is complicated, consider the fact that this little creature has no fewer than seven genders! Scientists have imaginatively termed these genders Types I through VII. A Type I cant mate with another Type I, but not to worry — it can choose from among any one of the remaining six genders. The new baby Tetrahymena get all the genetic info necessary to become any one of the seven possible types. Then, through a random process, their DNA gets pruned down to a single gender. Pretty complicated stuff a microscopic microbe!但是孤雌生殖不能产生遗传变异,而遗传变异有助于生物体适应环境变化,当周边环境变得不适宜生存时,四膜虫会启动一直休眠的性欲,以帮助自己存活那时,事情就变得非常有趣了如果你觉得研究性别政治已经非常复杂了,那就想想吧,这个小小的微生物竟然有不少于7种的性别!富有想象力的科学家们将这7种性别称为类型1至类型7两个个性别都为类型1的四膜虫无法交配,但是别担心,它可以与另外6种性别中任一种交配新形成的四膜虫携带了父代全部的基因,因而它们也能转变为7种性别中的任一种然后,经过随机选择,它们的DNA组将被修剪,最终只保留一种性别对极其微小的微生物而言,这真真是一件相当复杂的事审校:suyiee 来源:前十网 56360

  • 医护网黑龙江哈市九洲医院能检查怀孕吗
  • 哈尔滨道外区太平人民医院治疗宫颈糜烂多少钱
  • 南岗区妇女医院治疗妇科炎症好吗乐视典范
  • 问医面诊牡丹江妇幼保健妇保医院位置
  • 百家对话哈尔滨省十院门诊怎么
  • 黑龙江省九州专家预约
  • 牡丹江妇幼保健妇保医院有没有微信咨询城市口碑
  • 健步生活哈尔滨市中心医院妇科人流
  • 哈尔滨哪家人流医院比较好
  • 哈尔滨市医科大学医院第一院门诊时间度解答
  • 黑龙江省哈尔滨妇幼保健医院网上预约挂号
  • 光明新闻哈尔滨九院官网
  • 哈尔滨市医科大学二院在那里快问互动黑龙江哈市九洲做人流多少钱
  • 黑龙江九州是正规医院嘛
  • 尚志市打胎费用
  • 南岗区妇幼保健医院体检
  • 39助手黑龙江省九洲贵吗
  • 哈尔滨市做无痛人流哪里医院好
  • 宾县中医医院等级
  • 哈尔滨红十字中心医院网上预约系统
  • 黑龙江省哈尔滨中心医院网上挂号
  • 久久咨询五常市人民医院妇科专家大夫
  • 百科生活道里区做人流哪家医院最好的健康指南
  • 哈尔滨省第七医院电话号码中华助手哈医大附属二院人流收费标准
  • 导医大夫哈尔滨做引产哪个医院好网上网
  • 黑龙江中医药大学二附院做人流好吗
  • 哈尔滨做刮宫手术需要多少钱
  • 五常市妇科检查
  • 哈尔滨市第三医院医生的QQ号码
  • 哈尔滨宫颈糜烂是怎么引起的
  • 相关阅读
  • 哈尔滨市哪家医院做孕前检查做得好
  • 光明养生哈尔滨第二人民医院早泄治疗
  • 哈尔滨九州妇科医院打胎流产好吗
  • 康泰咨询哈尔滨妇幼保健院地址电话
  • 黑龙江省哈尔滨市妇女医院口碑搜医优惠
  • 哈尔滨那个无痛人流医院好
  • 赶集爱问道外区儿童医院几点上班
  • 五常市检查妇科病哪家医院最好的
  • 哈尔滨医大二院怎么样,收费贵吗
  • 搜医口碑哈尔滨十院生孩子好吗快乐晚报
  • 责任编辑:健康新闻

    相关搜索

      为您推荐