Abstract This chapter deals with disturbances of female sex differentiation during embryogenesis and the resulting disorders of genetic, gonadal, and phenotypic sex. Because the embryologic details have been discussed in another chapter, they are only briefly reviewed. An understanding of the pathogenesis...
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The results show that the XX-XY difference is due to a combination of a Y chromosome effect and an effect of the difference in X chromosome constitution (2X v 1X). The Y effect is not dependent on the presence of Sry. In the light of this and other studies, it is concluded that ...
Here the maternal tudor[1] mutation was tested in a particularly long-lived genetic background, and was found to increase the life span of male offspring, but to have neutral or negative effects on female life span. In the Drosophila soma, sexual differentiation is determined by the X ...
An early stage of sex chromosome differentiation is reported to occur in the electric eel III restriction enzyme digestion patterns and chromomycin A3 staining of the X-chromosome are presented. The possible role of heterochromatinization in the evolution of sex chromosomes in fish is discussed.DOI...
In order to support the decision-making process of physicians by adding objective opinions, computer-aided diagnosis (CADx) has been introduced and developed over the years5,6,7. CADx provides physicians with second opinions from computational and statistical perspectives so that physicians can refer...
In the model system Drosophila melanogaster, doublesex (dsx) is the double-switch gene at the bottom of the somatic sex determination cascade that determines the differentiation of sexually dimorphic traits. Homologues of dsx are functionally conserved i
[Definition 10.2.1] Let f:X\rightarrow \mathbb{R} be a function, and let x_0\in X。 We say that f attains a local maximum at x_0 if and only if there exists a \delta>0 such that the restriction f|X\cap(x_0-\delta,x_0+\delta) of X\cap (x_0-\delta,x_0+\delta) at...
1. 实变量微分 1.1 导数定义 1.2 可微必连续 1.3 微分四则运算性质 1.4 链式法则 1.5 例 2. 微分中值定理(mean value theorems) 2.1 极值定义 2.2 极值点导数若存在必为零 2.3 广义中值定理 2.4 Lagrange中值定理 2.5 微分与单调性 3. 导数的连续性(The continuity of Derivatives) 3.1 区间可微函数的中间...
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