两种精神发育迟滞的遗传学比较

Comparison of two kinds of mental retardation in genetics

将非特异性精神发育迟滞和精神发育迟滞伴发畸型，从患病率、适合度及遗传率三方面进行比较，可以充分说明，ＮＳＭＲ的个体生存能力较ＭＲ伴发畸型要强。

Non-specific mental retardation(NSMR)was compared to mental retardation with other malformations in respect of sibship morbidity,fitness and heritability It was shown that life ability of NSMR was much stronger than mental retardation with malformation,and so that NSMR could critically affect population quality in our country