好词典

trisomy

UK //ˈtraɪsəmi//US //ˈtraɪsoʊmi//

词源

源自希腊语 tri-(三) + -somy(来自soma,意为染色体体)

noun

❶ 指细胞中某对染色体多出一条的遗传异常现象,常见于唐氏综合症等疾病。

“Down syndrome is caused by trisomy of chromosome 21.”

(唐氏综合症是由21号染色体的三体性引起的。)

“Prenatal testing can detect fetal trisomy conditions.”

(产前检测可以发现胎儿的染色体三体异常。)

同义词:chromosomal abnormality, aneuploidy, chromosomal trisomy

常见短语

trisomy disorder — 指由染色体三体性引发的各类先天性疾病的总称。

“Genetic counseling is important for families affected by trisomy disorders.”

(对于受三体性疾病影响的家庭,遗传咨询非常重要。)