What causes Down syndrome or what is known as Mongolian?
1 - is a set of characteristics and features that appear together at the same time to distinguish a similar group of children mentally retarded.
2 - They are characterized by external physical characteristics and do not exceed the proportion of intelligence sixty.
3. The main and certain reason is that there are 3 chromosomes instead of 2 in chromosome 21, thus changing the total chromosomes.
4 - There are also other types of syndromes caused by the presence of 3 chromosomes in the same chromosome.
5 - Age of the mother during pregnancy role if it is greater than 35 years have been fertilized eggs.
6. If she is younger than 15 years, the reproductive system is still immature.
1 - is a set of characteristics and features that appear together at the same time to distinguish a similar group of children mentally retarded.
2 - They are characterized by external physical characteristics and do not exceed the proportion of intelligence sixty.
3. The main and certain reason is that there are 3 chromosomes instead of 2 in chromosome 21, thus changing the total chromosomes.
4 - There are also other types of syndromes caused by the presence of 3 chromosomes in the same chromosome.
5 - Age of the mother during pregnancy role if it is greater than 35 years have been fertilized eggs.
6. If she is younger than 15 years, the reproductive system is still immature.