查询词典 Mammals

In eutherian mammals, XCI is thought to be triggered by the expression of the non-coding Xist RNA from the future inactive X chromosome3, 4, 5; Xist RNA in turn is proposed to recruit protein complexes that bring about heterochromatinization of the Xi6, 7. Here we test whether imprinted XCI, which results in preferential inactivation of the paternal X chromosome, occurs in mouse embryos inheriting an Xp lacking Xist.

在最新一项研究中，美国北卡罗琳娜大学研究人员用小鼠胚胎（研究人员用基因工程方法使这些小鼠在其未来失活的X-染色体上含有一个有缺陷的Xist基因）所做的新的研究工作显示，实际情况更为复杂。

In animals, mitochondrial DNA is generally a 15-22 kb circular genome containing 37 genes: 13 protein-coding genes, two rRNA genes, and 22 tRNA genes, as well as a control region. All 37 genes are arranged in the same relative order almost in all vertebrate species from teleost fishes to eutherian mammals. In recent years, mtDNA has been widely used as a useful marker system in numerous phylogenetic analyses in vertebrate relationships.

脊椎动物线粒体DNA是一个环形结构，长度约为15-22kb.mtDNA呈母系遗传，具有相对保守性，已被广泛应用于分析动物个体鉴别和动物类群间的系统发生关系。

The continent's only native ferret is one of its most endangered mammals.

美洲大陆上唯一的一种鼬，它们是最濒危的哺乳动物。

The section of the lower leg in some mammals between the hock or knee and the fetlock , containing the cannon .

炮，管某些有哺乳动物小腿的部分，位于跗关节或膝关节与球关节之间，含有炮

The section of the lower leg in some hoofed mammals between the hock or knee and the fetlock , containing the cannon .

炮，管某些有蹄哺乳动物小腿的部分，位于跗关节或膝关节与球关节之间，含有炮

The section of the lower leg in some hoofed mammals between the hock or knee the fetlock , containing the cannon .

炮，管某些有蹄哺乳动物小腿的部分，位于或膝关节与球之间，含有炮

The of the lower leg in some hoofed mammals between the hock or knee and the fetlock , containing the cannon .

炮，管某些有蹄哺乳动物小腿的，位于跗关节或膝关节与球关节之间，含有炮

Because snails were eliminated when we poisoned fish in brooks and mice in houses or fields(mice are the final or transfer hosts of Paragonimus ) and mammals such as cats and dogs died by eating poison or poisoned fish or mice, the infection rate of P.

卫生并殖吸虫疫区感染率下降主要与溪河毒鱼时殃及螺蟹，房屋与田野毒鼠（并殖吸虫终末宿主或转续宿主）及致猫犬科动物误食毒鼠药饵或中毒的鱼、鼠致死所致。

They believe it may be a "missing piece in the evolutionary story of fish, mammals and ocean ecosystems".

他们相信它可能是"在鱼类、哺乳动物和海洋生态系统进化的故事中失踪的一片。"。

Flatulence is the presence of a mixture of gases known as flatus in the digestive tract of mammals expelled from the rectum.

胀气的存在是一种混合气体称为排气消化道哺乳动物赶出直肠。

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。