chrosomal abnormality in which there is one more than the normal number of chromosomes in a cell
双语例句
1. Fetuses aneuploidies , including trisomy 13 and 18 and triploidy, may have smaller placentas . 9–11.
但是,生长受限的胎儿, 包括13三体和18三体的胎儿胎盘都会明显偏小.
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2. A short femur is associated with trisomy 21 rather than trisomy 13 and holoprosencephaly.
股骨短与21-三体而不是13-三体或全前脑畸形有关.
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用作名词 (n.)
An aneuploid state in which a third homologous chromosome is present in addition to the normal autosomal pair is called trisomy. 除了正常染色体对以外，还存在有第二种同源染色体的非整倍体状态，被称为三体性。
