摘要
胎儿在子宫内生长发育的时期大约需要10个月.从受精卵起到胚胎出离卵膜的这段过程叫做胚胎发育.在胚胎发育过程中,遗传物质的改变或环境因素的影响都会引起胚胎发育异常,导致流产或出生缺陷.在计划生育被人们普遍接受的今天,优生显得越来越重要.为了防止或减少先天性畸形和遗传性疾病患儿出生,及时阻断遗传病和各类畸形的发生,减少群体中有害基因的积累和传递,本文深入探讨新生儿畸形的发生率及其可能的病因,为防治提供依据.
It takes about 10 months to develop of fetus in uterus.Embryonic development is the phase from zygote formation to its leaving egg membrane.In this period,the hereditary material changes or environmental factors result in the embryonic development malformation,abortion,and birth defect.In recent years,people take more attention to eugenics.In order to avoid or reduce the congenital malformation and hereditary diseases of fetus,block the occurrence of genetic diseases,and decrease the accumulation of harmful genes,we investigate the malformation incidence and its incentive in the present study.
出处
《商丘师范学院学报》
CAS
2011年第12期75-78,共4页
Journal of Shangqiu Normal University
关键词
胚胎发育
畸形
优生
embryonic development
malformation
eugenics
