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Granulosus is further;2. In differentiation of closely relatedspecies, the changes in heterochromatin and pericentric inversions are key factors, this is wellnoted in the small chromosomes;3. A. mantzorum has well-differentiated XY type sex chromo-'.omes, the Y chromosome is mainly composed of euchromatin, but has strong C-band in themiddle of the long arm. It is suggested that the Y chromosome of A. mantzorum is in the-initial stage of sex chromosome differentiation.

结果表明：(1)四川湍蛙、理县湍蛙和棕点湍蛙之间的亲缘关系较近，而它们与棘皮湍蛙的亲缘关系较远；2）在近缘种的分化中，染色体结构异染色质的变化和臂间倒位是重要的因素之一，这在小型染色体上表现得尤为突出；四川湍蛙具有在形态上分化很明显的性染色体。C带分析表明，此性染色体主要由常染色质构成，但在其Y染色体的长臂上存在明显的中间C带，推测尚处于性染色体分化的初期阶段。

Furthermore, two forms of coadaptation between sex chromosomes, the interaction between a meiotic driver and its suppressor, and dependence of a Y-like chromosome on its homologue, were also probable reasons why sexual antagonism was not observed on old Y-like chromosomes.

类似 Y 的染色体对它同源染色体的依赖性；都可能是导致性别拮抗因子在晚期观察不到的原因。

Taking the overall crop yields or overall net profits on the whole planned area to be maximum as the targets respectively, the paper gives calculating formulae of rational irrigation quota in accordance with that the constant term of Y=f is smaller or greater than zero and the water use coefficient of irriga...

分别以整个灌区上的总净收益和总产量最大为目标，在假定仅种植单一作物，且地力及其它因素一致的条件下，给出了与Y＝Y中的常数项a大于或小于零以及灌溉水利用系数随灌溉面积变化与否相对应的作物合理灌溉定额的计算式。

If you miss her skirt will flip up, and if you win sheYou must use your cross hairs and every time a ball comes you have to click on it, and if y , sheYou , y .

如果你错过了她的裙子将快速上升，如果你赢得sheYou必须使用您的十字线，每次一球来你点击它，若y，sheYou ，辎

The hippocampus is falling sickness relevance brain area, Nerve peptide Y is that self own is generally acknow- ledged have the anti-epileptic effect nerve peptide within the brain.

海马是癫痫相关脑区，神经肽Y(Neuropeptide Y，NPY)是脑内具有抗癫痫作用的神经肽己被公认。

W' j*?, y% ^* O+ Bwww.pukevip.com So even if a poker hand is one giant math problem, complete with game theoretic opponents who do a, b, and c x%, y%, and z% of the time, it's an unsolvable problem.

尽管扑克是一个巨大的数学问题，要考虑到对手全部的游戏策略，比如他做 a ， b 和 c 这些行动的可能性分别是 x%， y%和 z%，这是不可能的。

Since grumpy cows are harder to move, it takes FJ a total of X+Y units of time to exchange two cows whose grumpiness levels are X and Y.

脾气越大的奶牛越难移动。交换两头"脾气指数"分别为X和Y的奶牛需要花费FJ

Recombination suppression in the sex-determining region and accumulation of deleterious mutations lead to degeneration of the Y chromosomes in many species with heteromorphic X/Y chromosomes.

这个问题一直困扰着科学家，在2008年最后一期的世界著名杂志《基因组研究》上，王秀娥和张文立博士发表了《番木瓜原始Y染色体的雄性特异区中DNA甲基化和异染色质化》的研究论文，初步揭示了性染色体的起源变化机制。

Give an efficient algorithm to compute the least common multiple of two n-bit number x and y, that is ,the smallest number divisible by both x and y.

给出一个计算最小公倍数：能同时整除x和y的最小的数。

If N is a nonempty subset of a left R module M, then N is a submodule of M if and only if the following conditions hold:(1) x+y is in N for any element x,y in N;(2) rx is in N for any r in the ring R, and any x in N.

假设 N 是左模的非空子集合，那么N 是子模的充分必要条件是，对N 中的任何两个元素x，y有

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。