纯种的

We studied polymorphisms of 23 microsatellite loci from 23 chromosomes in an indigenous breed of Xuefeng black bone chicken from Hunan in order to elucidate its genetic diversity and structure and to propose reasonable measures for its conservation and utilization.

为了评价雪峰乌骨鸡现有品种资源的遗传背景、群体遗传结构等，提出合理的保种方法和措施，本研究筛选了家鸡基因组23条染色体上的23个微卫星标记，对采自湖南怀化的50只纯种乌骨鸡个体进行了多态性检测。

Methods The bone marrow cells of pure Kumming species of mice were used as experimental material in which the micronucleusand sister chromatid exchanges induced by cyclophosphamide were used as an index.

方法以昆明纯种小鼠的骨髓细胞为实验材料，用公认的诱变剂环磷酰胺诱发的微核率和姐妹染色单体互换频率为指标，研究EGCG对CP诱导小鼠骨髓细胞MN和SCE的影响。

Mr Righi said that donkeys had become redundant with the mechanisation of farmwork and other uses had to be found. Some are now kept as a tourist attraction while others are used in work with disabled children.

目前欧盟也已获知意大利驴所面临的危险处境，他们准备向每头纯种驴的饲养者支付一笔费用，条件是他们饲养的必须是当地土生土长的驴子。

Still, the breed's ancient history means that anyone who opts for a purebred should make absolutely sure the breeder has considered the dog's forbears' temperament.

不过，这一品种的古老历史的手段，任何一个纯种谁应该绝对肯定的育种审议了狗的祖先'气质

In the dramatic finale, the emirs son rode a pure bred Arabian horse up steep stairs.

在开幕式的最后阶段出现了颇富戏剧性的一幕，该国一位王子骑着一匹纯种阿拉伯马沿着陡峭的斜梯飞驰而上。

It is one of the most recent breeds to be accepted for registration by the Cat Fanciers' Association.

它是美国爱猫协会最新接受登记的品种之一。2000年2月对这一品种的认可标志着美国短尾猫在纯种猫中已经有了一席之地，这一点繁育者们已经在多年前意识到了，如今得到了进一步的证实。

The ancestry of pedigree pooches is well recorded, their generation time is short and their litter size reasonably large , so there is plenty of material to work with.

有关纯种狗祖先的记载相当完备，他们寿命短体型大的特点为研究提供了大量的素材。

"There was a view that hybridisation was bad, and 'pure' species were good," says James Mallet of University College London.

英国伦敦大学学院的詹姆斯·马拉特说，&有一种看法认为杂交是不良的，而纯种才是&优良的。

AI can be used in non-hybrid matings when the situation dictates, such as when a mating pair has not produced offspring after several months of co-habitation.

在某些时候人工受精技术会使用于不同类型的纯种剑尾鱼之间的杂交，例如一对杂交种鱼经过了几个月的同缸生活后还是没有生产后代。

Of yolk (13%-88%) of pigeon eggs were replaced by yolk of Rhode Island Red, local black hen or South China Duck, the hatchability was about 60%.

三如果实验鸽亲本是同色纯种，调换卵黄对于羽色没有产生明显的变异；如果亲本不是同色，多数经调换蛋黄的幼鸽羽色较对照的显得深些。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。