The same effects of inbreeding may have occurred in controlled cattle populations, with some additional, and perhaps unrecognized, advantages.
近亲繁殖在有限的一部分牛群中可能会有同样的效果,同时它还有其他一些也许还未被认识到的优点。
If inbreeding is bad, then the opposite - outbreeding - should be good.
如果同系繁殖不好,那么与之相反的远系繁殖就应该好。
And this is what happens with small populations and inbreeding of close relatives.
当一个物种的种群数量稀少而又不得不近亲繁殖时,灭绝就会发生。
This kind of isolation increases their risk of extinction in the wild, due in part to a higher likelihood of inbreeding.
这种分离增加了他们面临灭绝的风险,其部分原因在于近亲繁殖的可能性更大。
In truth, while inbreeding should not necessarily be considered a good thing, it is not nearly as bad as some people think.
事实上,虽然近亲繁育并不是一件好事,但它绝不像人们所想的那样糟糕。
See coefficient of inbreeding.
参见近交系数。
Surprisingly, the panda genome turned up no signs of inbreeding.
令人惊讶的是,大熊猫基因组没有出现任何近亲繁殖的迹象。
AIM: To detect the inbreeding degree of Banna miniature pigs with DNA fingerprinting.
目的:以DNA指纹法检测西双版纳小耳猪的近交程度。
Poaching, deforestation, and inbreeding have caused the near extinction of these big cats.
盗猎、森林砍伐以及近亲繁殖造成了牠们几近灭种。
The growth performance of inbreeding population is similar to those of control population.
对照群体团头鲂与近交群体后代生长性能相当。
The main drawback is that inbreeding can bring together couples with the same gene defects.
近亲繁殖的主要缺点在于集中了父母双方同样的基因缺陷。
Useful life of breeding flock ram should not surpass 4 years according to inbreeding increment.
从近交系数增量考虑,育种群公羊使用年限最多不应超过4年。
White tigers are extremely rare in nature, and many seen in zoos today are produced through controversial inbreeding.
自然界的白虎已经极为稀有,如今许多在动物园里见到的白虎都是通过备受争议的近亲繁殖产生的。
Thomas says the legendary inbreeding of Egypt's royal families probably had little to do with the incidence of heart disease, however.
不过Thomas说,传说的埃及法老近亲通婚很可能和心脏病发病率没什么关系。
Further reducing the number of wolves by poaching leaves this population very vulnerable to further inbreeding, explained Dr Chapron.
沙普龙博士解释说,通过偷猎进一步减少狼的数量,极易引发更深层次的近亲繁殖。
Modern artificial gynogenetic technology provides a rapid and economic way to establish pure line or highly pure inbreeding line of grass carp.
人工雌核发育技术可加快草鱼纯化过程,是快速经济地建立遗传背景一致纯系的有效方法。
The above-mentioned results indicate that the formation of autopolyploid and allopolyploid may be related to the level of inbreeding depression.
上述研究结果预示同源和异源多倍体的形成可能与其近交衰退的水平有关。
The aim of breeding is to obtain continuous genetic advance whilst maintaining the genetic variation and limiting the inbreeding level of the population.
育种工作的目的在于保持群体遗传变异、控制群体近交的同时,获得持续的遗传进展。
The paternal line was developed from inbreeding, its inbreeding coefficient was 38-39%, While the maternal line was selected from generation among closed flock.
父系以近交法建系,近交系数达38—39%,母系以家系闭锁世代选择法建系。
These survivors are all the progeny of just two males and four females, and display the lowered fertility and above-average infant mortality that goes with inbreeding.
这些幸存者均由2只雄虎和4只雌虎繁衍而来,繁殖能力明显减退,并且由于近亲繁殖其幼虎死亡率也超出平均水平。
Inbreeding depression is the decrease of offspring fitness after inbreeding and is one of the primary forces selecting against the evolution of self-fertilization.
近交衰退指近交个体的适合度相对下降的现象,它是近亲繁殖的主要障碍。
Unless we can enlarge existing habitat corridors linking the park to communities in the north, the Gombe chimpanzees could succumb to disease or inbreeding within decades.
除非我们能扩大现有聚居带,使之与北部的群落相连,否则贡贝的黑猩猩很可能在几十年间由于疾病或近亲繁殖而灭绝。
At present, inbred lines of transgenic insect resistant maize with selective marker gene removed are in separating and inbreeding program assisted by DNA marker detection.
目前,正结合进行田间分离纯合和DNA分子鉴定,培育去除选择标记基因的转基因抗虫玉米自交系。
This is evidence that men sought partners from different regions to avoid inbreeding and that it was customary for women to move to the location of the males, the researchers said.
研究人员称,这说明当时的男性从不同的地区寻找配偶,以避免近亲繁殖,而女性嫁到男性的家乡也是当时的一大习俗。
The version 6.11 and its higher version of Statistical Analysis System (SAS) provides an inbreed procedure which can calculate inbreeding coefficients of large animal population.
SAS统计分析系统(6.11版本以上)中提供了一个可用于大型畜群近交程度分析的INBREED过程。
The effects of successive inbreeding progenies of Brassica napus L. on the embryo development were studied in comparison with the open-pollinated population and hybrids from inbred lines.
以自由授粉群体和品系间杂种为对照,研究了甘蓝型油菜连续自交后代在胚胎发育上表现的效应。
As we have previously reported, Amur tiger populations have dropped precipitously in recent years to around 250 animals, and the species faces a genetic bottleneck that puts it at risk of inbreeding.
我们之前的报道指出,它们的数量在最近几年锐减到250只左右,这个种族面临着遗传瓶颈,这将它们推入了近亲繁殖的危险境地。
Darwin realized the dangers of inbreeding and wondered if his close genetic relation to his wife had had an ill impact on his children's health, three (of 10) of whom died before the age of 11.
达尔文意识到近亲结婚的危险,并且怀疑过自己和妻子相近的基因关系是不是对他们的孩子的健康造成了不良影响,他们的(10个中的)三个孩子在11岁之前就死去了。
Darwin realized the dangers of inbreeding and wondered if his close genetic relation to his wife had had an ill impact on his children's health, three (of 10) of whom died before the age of 11.
达尔文意识到近亲结婚的危险,并且怀疑过自己和妻子相近的基因关系是不是对他们的孩子的健康造成了不良影响,他们的(10个中的)三个孩子在11岁之前就死去了。
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