chromosomal

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The only difference is at the chromosomal level, deep inside the embryos' cells.
唯一的区别在于染色体的水平，它埋藏在胚胎细胞的深处。
There are two test options available between the 15th and 18th weeks to screen for chromosomal abnormalities and neural tube defects such as Down’s syndrome and spina bifida.
在15周到18周之间有两个极好的检查可以选择来甄别染色体异常和神经管缺损症状，比如：唐氏综合症和脊柱裂。
To check an egg for chromosomal abnormalities, doctors use a laser to make a small incision in the outer membrane, which allows them to extract the polar body and the chromosomes it contains.
为了检查一个卵细胞的染色体是否异常，医生用激光在卵细胞外膜上切一小口，通过这个小口抽取极体及其所含的染色体。

The researchers knew it would be easier and less costly to map a smaller frog with fewer chromosomal pairs.
Has only half of the diploid chromosomal content that most of the cells, which are called somatic cells in our body have.
卵子中只含有我们机体一半的染色体,二倍体基因组中一半的染色体,这些二倍体细胞称为体细胞
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They're not chromosomal differences because this is the ordinary process of mitosis.
它们的染色体没有任何变化,因为这是正常的有丝分裂过程
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However, amniocentesis has an advantage in that it tests for a variety of chromosomal and genetic issues.
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relating to chromosomes (= the parts of the cell that carry genetic information)