Tubal Reversal Pregnancies: Age And Genetic Abnormalities
Posted Jul 31 2009 11:52am
Trisomy – Most Common Chromosome Abnormality
There are many different types of genetic abnormalities. The most common is chromosomal (DNA) trisomy.
Trisomy means there are three copies of any one of our 23 chromosomes. Normally, we have two copies of each. Humans have 23 different chromosomes and each chromosome has a duplicate, or back up copy, giving [...]