查询词典 chromosome

F1 hybrid has the morphological feature which is between the male and female parents and shoed strong heterosis, exuberant vitality, late ripe period and low rate of self-fertility. The average chromosome configuration of F1 in PMC MI was 18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ. At anphase Ⅰ in PMC, some laggard chromosomes arranged in equatorial plate. Micronucleus and a lot of abnormal cells can be observed at dyad, tetrad and microspore.

杂种F1形态特征介于双亲之间，具有较强的杂种优势，生长旺盛，熟期晚，自交结实率较低。F1花粉母细胞减数分裂中期Ⅰ平均染色体构型为18.58Ⅰ+18.59Ⅱ+0.085Ⅲ+0.028Ⅳ，PMC后期Ⅰ观察到部分落后染色体排列在赤道板上；二分体、四分体和小孢子时期，细胞内普遍观察到微核，且出现大量异形细胞。

Objective:To investigate the relationship between self-generating abortion couples and abnormal chromosome which have been inspected in the 240 couples.

目的：探讨自然流产夫妇与染色体异常的关系。

The abnormality of chromosome is one of reasons of self-generating abo

染色体异常是导致流产的重要原因之一，应对这类患者进行常规细胞遗传学检查。

This hypothesis is supported by the evidence such as the locations of genes associated with familial hemiplegic migraine, possibly "typical" migraine as well (dominantly on chromosome 19p, 1q, and 2q), male:female ratio of prevalence (1:2-1:4), the mostly youth-onset, the provocation by the contraceptives, the induction by menstruation, and the self-limitation after menopause.

支持此假设的证据有：家族性偏瘫性偏头痛以及其它一些经典的偏头痛疾病相关基因位于在常染色体19p，1q和2q；男女性别比为1：2-1：4；大多数在青年期前后发病；避孕药可以诱发；月经期好发；女性绝经期常自愈。

Study on the origin of Sequoia sempervirens and the significance of chromosome data in it.

标题 红杉起源的研究及染色体资料的意义。

In recent years, by using sex chromosome or cell surface antigen as a marker, the characteristics of proliferation and differentiation of spleen colony-forming cells have been studied systematically.

近年来，许多学者采用天然的性染色体或是细胞的特异表面标志作为细胞遗传标志深入、系统地研究了脾结节生成细胞（spleen colony-forming cell，CFC-S）的增殖与分化性能。

Objective To evaluate the diagnostic value of fluorescence in-situ hybridization in sex chromosome abnormality.

目的 探讨荧光原位杂交技术在性染色体异常诊断中的价值。

The most likely cause of the abnormal sex chromosome is: 1 point

不正常性染色体产生的原因是

So we considered that the number and morphology of NORcan not be used as identification markers of sex chromosome in Ginkgo biloba.

认为NOR的数目和形态不能作为性染色体的识别特征，并对NOR的杂合性和多态性进行了讨论。

ZFY gene is isolated and cloned from the sex determining region of Y chromosome.

1ZFY基因是从Y染色体上性别决定区分离出来的

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.

要是在劳改农场，你等着挨绳子吧！