The apparent symmetry of the vertebrate body conceals profound asymmetries in the development and placement of internal organs. Asymmetric organ development is controlled in part by genes expressed asymmetrically in the early embryo, and alterations in the activities of these genes can result in severe defects during organogenesis. Recently, data from different vertebrates have allowed researchers to put forward a model of genetic interactions that explains how asymmetric patterns of gene expression in the early embryo are translated into spatial patterns of asymmetric organ development. This model helps us to understand the molecular basis of a number of congenital malformations in humans.
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机译：非对称网球拍或其他球拍-球拍的中线纵轴的每一侧都有不同宽度的拍头，且球拍的厚度不同。AB FR2691073A该球拍的手柄（4）沿球头的中纵轴排列。轴将头部分为左右两部分（7,8）。在垂直于轴线的每个侧向平面中，左侧部分（8）比右侧部分（7）宽。磁头左侧的最大厚度（L2）大于右侧的最小厚度（L3）。最大厚度大于手柄的厚度（L1），最小厚度小于此值。框架的左侧比右侧更厚。用途/优势-用于网球和类似运动的不对称球拍有利于将热量与地面成直角放置。 AN 93407774 TI内置磁罗经的滑雪杖-包括空心金属管（续）。带有塞子的指南针，用于覆盖wri附近的顶部开口
