Doctors extract a cell from an embryo and test it for chromosomal abnormalities.

医生从胚胎中取出一个细胞，并且检测这个细胞是否有染色体遗传。

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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。

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The result is a new chromosomal pattern that is distinct from our own.

后果就是形成一种与我们自身完全不同的新的染色体类型。

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The researchers knew it would be easier and less costly to map a smaller frog with fewer chromosomal pairs.

VOA: special.2010.06.29

You put this chromosomal DNA or this DNA that you're interested in, double stranded into a test tube.

你把这个染色体DNA,或者你感兴趣的双链的DNA,放进一个试管

耶鲁公开课 - 生物医学工程探索课程节选

How could I identify in a chromosomal DNA sample whether the sickle gene is present?

那我该怎么确定某染色体DNA样本中,是否存在这种致病基因呢

耶鲁公开课 - 生物医学工程探索课程节选

They found that two chromosomal regions spanning a handful of genes seem to be important in controlling the activity of copia.

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Her 18-year-old son Jermarl Henderson, who has a chromosomal disorder called DiGeorge Syndrome, has had multiple open-heart surgeries and requires intensive, complex therapy, she said.

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Santorum canceled campaign events for Monday after daughter Isabella, who suffers from a chromosomal condition called Trisomy 18, was hospitalized for the second time this year.

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