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杂交

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Barbary duck is a cross between a wild duck and an ordinary duck.

巴巴里鸭系由野鸭与普通鸭杂交而成。

A barbary duck is a cross between a wild duck and an ordinary duck.

巴巴里鸭系由野鸭与普通鸭杂交而成。

Blood samples from 23 Huacaya alpacas ,3 males and 20 females ,were used to study chromosome karyotype ,so as to provide some effective cytogenetics basis for the selectioiymprovement by crossing and disease diagnosis of alpacas ,and genetic mechanisms of sex determination. Peripheral blood lymphocyte culture was used to prepare chromosome. Methods of trypsase-EDTA and BSG (Barium hydroxide / Saline / Giemsa)were used for G-banding and C-banding respectively . The results showed as follows:Firstly , the number of diploid chromosomes was in the alpacas 2n=74,with the karyotype 74, XY and 74, XX for males and females respectively.

为了从选种、杂交改良、疾病诊断以及性别决定的遗传机制等方面为羊驼的繁育与推广提供更为有效的细胞遗传学资料,本试验采用外周血淋巴细胞培养法制备染色体,分析了23只胡阿基亚型羊驼(Huacaya alpaca,雌20只,雄3只)的染色体及其核型,并通过BSG法(Barium hydroxide/Saline/Giemsa,氢氧化钡-盐溶液-吉姆萨,也即Sumner BSG法)与胰酶-EDTA法分别对羊驼的C-分带和G-分带进行分析,结果表明:(1)羊驼二倍体染色体数目为2n=74,雄性羊驼核型为74,XY;雌性羊驼核型为74,XX。

Mating the gentle bee with the mean bee produced a bee known as the killer bee.

把温和的蜜蜂和自私的蜜蜂杂交产出的蜜蜂就像杀人蜂一样。

These studies help providing information for cross-improvement for beef cattle.

这些研究为肉牛的杂交改良奠定了基础。

Other experiments in crossing bighead and silver carp have produced a new variety of fish.

使大头鱼和银色鲤鱼杂交的其他试验获得了一个新品种。各式各样的,种类繁多的

In hygiene inspects, microbial pollution can be detected through bioluminescence of ATP or molecular hybridization.

卫生学检测则主要是利用分子杂交或ATP导致的生物发光检测微生物污染。

Eckenwalder Lab, Department of Botany is primarily dedicated to research in woody plants including biosystematics, chemotaxonomy, numerical taxonomy and morphometrics, paleobotany, and cladistics, accommodation of hybridization in phylogenetic analysis, biogeography, systematics and reproductive biology of convolvulaceae.

植物学系Eckenwalder研究室主要致力于木本植物的研究,其研究领域包括生物分类学,化学分类学,数量分类学和形态测定,古植物学和遗传分类学,系统分析中杂交调节,生物地理学,滕本植物的分类学和生殖生物学等。

Methods The probes labeled by biotin were used in situ hybridization to detect the expression of 6 kinds of mRNA.

用生物素标记的6种cDNA探针,细胞玻片原位杂交的方法。

Section in situ hybridization demonstrated that the Fstl1 transcripts in cervico-lumbar spinal cord were distributed in the gray matter neuro-cells and ependymal cells. hybridization signals were present widely in dedifferentiated cells and mesenchyme cells at 2 wks and 3 wks while also in cartilaginous cells at 3 wks of regenerating blastema after tail amputation.

原位杂交结果显示,多疣壁虎脊髓中Fstl1的阳性信号主要存在于灰质神经元细胞及室管膜细胞;而在断尾再生2~3周尾芽中,Fstl1阳性信号广泛存在于再生尾芽的新生区未分化细胞及间充质细胞,3周尾芽中,阳性信号还存在于软骨生成区。

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She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了,但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

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