查询词典 placental mammals

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。

During this time mammals, along with some large flightless birds, did take over. Then they became extinct.

在这期间，一些哺乳动物与一些无飞行能力的大型鸟类对这个世界也有过当家作主的经历，之后它们就灭绝了。

Add it into your food such as to yogurt, cottage cheese and such.

你可以把它加入到像酸奶、奶酪一类的食物中一起进食。

The man was rescued about three hours later when his partner arrived home, SAPA said.

SAPA说，这为男子在三个小时后妻子回家后被解救