至于说它是一件好事，在相关个人或来自小族群人们的孩子中潜在的遗传疾病告诉我们，近亲繁殖通常不是好主意。
As for it being a good thing, the potential for inherited disease in children of related individuals, or people from small communities, tells us that inbreeding is generally not a great idea.
(举例来说，假如大部分个体是由小部分的父母亲繁衍而来，他们更易受到遗传疾病的侵袭，甚至有可能让整个种群几乎在一次侵袭中全军覆没。)
if most individuals are bred from a small number of parents, they could be vulnerable to a genetic disease, potentially wiping out almost the whole population at once.
例如在人们开始吸烟之前，肺癌多数是一种遗传疾病，然后便成为了主要因香烟导致的疾病。
For instance, lung cancer was mostly an inherited disease until people starting smoking, and then it became a disease that was caused mostly by cigarettes.
这种遗传疾病与大脑中神经递质的受体分子的一些个别变种有关。
It is associated with particular variants of receptor molecules for neurotransmitters in the brain.
科学家们最近在一种罕见遗传疾病的治疗上取得了很大进展。他们的方法是：从患者身上提取少量皮肤薄片和头发，再借此制造出健康的细胞。
Scientists have taken a big step towards treating a rare inherited disease by creating healthy cells from flakes of skin and strands of hair plucked from patients.
“现在我们能够胸有成竹地说adhd是一种遗传疾病，患有此症的儿童的大脑和其他儿童的发育过程不同，”AnitaThapar教授说。
"Now we can say with confidence that ADHD is a genetic disease and that the brains of children with this condition develop differently to those of other children," said Professor Anita Thapar.
这就印证了变异基因是自然选择保留下来的结果，可它却不能回答自然选择为什么会成了遗传疾病的帮凶，但在一些特殊的条件下，进化能够产生这样的结果。
But it does not answer the question of how evolution can favour genetic diseases. However, in certain circumstances, evolution can.
而约有10万人患有视网膜色素变性疾病，它是一种进行性的遗传疾病，通常在儿童时期发病。
About 100, 000 have retinitis pigmentosa, a progressive, genetic disorder that usually manifests in childhood.
情感上的创伤引发的遗传疾病问题是哪一种？
Continuing emotional trauma triggers a genetic illness. Question is, which one?
在一种特殊的遗传疾病镰形细胞贫血症中，红血球不是圆盘状而是镰刀状。
In one particular inherited disease, sickle cell anaemia, the red blood cells, instead of being flat discs, are sickle shaped.
遗传性嗜中性白血球减少症是一种常染色体隐性遗传疾病，该疾病导致成体中性粒细胞无法从骨髓迁移到血液中。
Trapped Neutrophil Syndrome is an autosomal recessive disease which results in mature neutrophils being unable to migrate from the bone marrow into the blood.
口吃一直被认为是家族遗传疾病，科学家终于找到了三种可能造成某些人出现口吃的基因。
Stammering has long been recognised to run in families, but scientists now say they have identified three genes which may cause the problem in some people.
为进一步研究和人遗传病相关的重复序列的结构特性及该类遗传疾病的分子机理奠定基础。
This work was the basis of the further investigation on structural feature of repeat sequences and molecular mechanism of this kind of genetic diseases.
乳腺癌是一种很强的遗传疾病，困扰了英美两国约九分之一的妇女。
Breast cancer - which will affect about one in every nine women in Britain and the United States - is known to have a strong genetic influence.
这项历史性的、同时又极具争议的举措，是为了防止孩子一生下来就携带有致命性遗传疾病。
Thee historic and controversial move is to prevent children being born with deadly genetic diseases.
先天性纤维化症候群是一少见的家族性遗传疾病。
Congenital fibrosis syndrome is a rare familial hereditary disease, characterized by fibrotic change of extraocular muscles.
因此，无论从什么角度来说，我都不把遗传疾病看作是任何超自然力的某一权威令人难以理解的意志的体现。它是我们应极力避免的具有或然性的人类悲剧。
I thus do not see genetic diseases in any way as an expression of the complex will of any supernatural authority, but rather as random tragedies that we should do everything in our power to prevent.
这就是卟啉症了，一种罕见的遗传疾病。
牛白细胞粘附缺陷病(BLAD)是一种常染色体单基因隐性遗传疾病，病因为白细胞表面整合素cd 18亚单位基因突变所致。
Bovine leukocyte adhesion deficiency (BLAD) is autosomal recessive disease. The pathogeny of BLAD is genic mutation of CD18-integrins on the leukocyte.
高血压是一种复杂的多基因遗传疾病。
Background:Essential hypertension (EH) is a complex and polygene genetic disease.
阿尔法1 -抗胰蛋白酶缺乏症是一种遗传疾病传播有关的风险增加肺气肿和肝脏疾病。
Alpha 1-antitrypsin deficiency is a genetically transmitted disorder associated with an increased risk of emphysema and liver disease.
然而有少数遗传疾病，科学家却一次又一次看到相同的突变。
In a few disorders, however, the same mutation is observed over and over.
他的两个孙儿得了一种罕见的遗传疾病，其中一个已经离开人世。
Two of his grandchildren developed a rare genetic disorder, and one died.
对后代属于罕见性别相关遗传疾病的高危人群的父母来说，这可能是一个好消息，比如男孩的Duchenne肌肉萎缩症和女孩的Turner综合症。
This could be good news for parents whose offspring are at risk of rare gender-related genetic disorders, like Duchenne muscular dystrophy in boys or Turner syndrome in girls.
血友病是一种遗传疾病，血液无法正常凝固。
Hemophilia is an inherited disorder that prevents blood from clotting properly.
血友病是一种遗传疾病，血液无法正常凝固。
Hemophilia is an inherited disorder that prevents blood from clotting properly.
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