It is possible to detect by biochemical tests of the maternal plasma(or amniotic fluid) certain fetal anomalies.
In amniocentesis a needle is inserted into the uterus through the abdominal wall of the pregnant mother to obtain amniotic fluid.It is usually carried out after about 14 weeks gestation. There is a small risk to the fetus during [...]
Gametogenesis and Chromosomal abnormalities
23 Nov
Posted by Dr Shihaan as Gametogenesis, Human Birth Defects
Disruption of meiosis during gametogenesis may result in the formation of chromosomally abnormal gametes. eg nondisjunction which can lead to a numerical chromosomal abnormality such as in down’s syndrome.
There is an increase in the likelyhood of chromosomal abnormalities in the embryo after the mother reaches 35 years of age. The ideal maternal age for reproduction [...]
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