لینک دانلود و خرید پایین توضیحات
دسته بندی : پاورپوینت
نوع فایل : PowerPoint (..pptx) ( قابل ویرایش و آماده پرینت )
تعداد صفحه : 25 صفحه
قسمتی از متن PowerPoint (..pptx) :
کروموزوم Aneuploidy As women age some chromosomes exhibit non-disjunction in oocytes Many theories why 13, 18, 21 associated with age 16 and X only first meiotic division associated with age Most chromosome abnormalities incompatible with life Will miscarry Maternal age specific estimates of trisomy among all clinically recognisable pregnancies Hassold et al., 1985 Parental origin of aneuploidy Paternal % Maternal % Trisomy 13 15 85 Trisomy 18 10 90 Trisomy 21 5 95 45,X 80 20 47,XXX 5 95 47,XXY 45 55 47,XYY 100 0 Chromosome abnormalities in humans Spermatozoa 10% Mature oocytes 25% Spontaneous miscarriage 50% Live births 0.5-1% Most due to maternal meiotic non disjunction Strongly related to maternal age Natural selection at work
دسته بندی : پاورپوینت
نوع فایل : PowerPoint (..pptx) ( قابل ویرایش و آماده پرینت )
تعداد صفحه : 25 صفحه
قسمتی از متن PowerPoint (..pptx) :
کروموزوم Aneuploidy As women age some chromosomes exhibit non-disjunction in oocytes Many theories why 13, 18, 21 associated with age 16 and X only first meiotic division associated with age Most chromosome abnormalities incompatible with life Will miscarry Maternal age specific estimates of trisomy among all clinically recognisable pregnancies Hassold et al., 1985 Parental origin of aneuploidy Paternal % Maternal % Trisomy 13 15 85 Trisomy 18 10 90 Trisomy 21 5 95 45,X 80 20 47,XXX 5 95 47,XXY 45 55 47,XYY 100 0 Chromosome abnormalities in humans Spermatozoa 10% Mature oocytes 25% Spontaneous miscarriage 50% Live births 0.5-1% Most due to maternal meiotic non disjunction Strongly related to maternal age Natural selection at work
فرمت فایل پاورپوینت می باشد و برای اجرا نیاز به نصب آفیس دارد