6 doctors weighed in:
Why are women the cause of Down syndrome more often than men are?
6 doctors weighed in

Dr. Derrick Lonsdale
Preventive Medicine
3 doctors agree
In brief: Non dysjunction
This term means that one of the earliest divisions of the embryo after conception delivers 3 number 5 chromosomes to a daughter cell and only one to the other daughter cell.
The trisomy cell survives to create down's syndrome babies.

In brief: Non dysjunction
This term means that one of the earliest divisions of the embryo after conception delivers 3 number 5 chromosomes to a daughter cell and only one to the other daughter cell.
The trisomy cell survives to create down's syndrome babies.
Dr. Derrick Lonsdale
Dr. Derrick Lonsdale
Thank
1 comment
Dr. James Ferguson
Pediatrics
1 doctor agrees
In brief: The way things are
The male contribution to conception comes from a stem cell system continuously producing new sperm from puberty until ??The healthiest sperm are the most likely to complete the process.
(defective ones don't swim as well) Women usually release one egg at a time, that represents accumulated age/toxic exposures/etc.If an extra 21 chromosome is in an egg, it produces a defective but survivable embryo

In brief: The way things are
The male contribution to conception comes from a stem cell system continuously producing new sperm from puberty until ??The healthiest sperm are the most likely to complete the process.
(defective ones don't swim as well) Women usually release one egg at a time, that represents accumulated age/toxic exposures/etc.If an extra 21 chromosome is in an egg, it produces a defective but survivable embryo
Dr. James Ferguson
Dr. James Ferguson
Thank
Get help from a real doctor now
Dr. Cindy Juster
Board Certified, Pediatrics
32 years in practice
2M people helped
Continue
107,000 doctors available
Read more answers from doctors