There are 3 types of Down syndrome. Trisomy 21, Translocation and Mosaicism. Trisomy 21, the most common form, is when a 3rd copy of the 21st chromosome is present in every cell of the body. Translocation, the most rare form, occurs when a piece of the 21st chromosome breaks off during cell division and attaches to another chromosome. Finally, Mosaicism, occurs when there is a mixture of cells in the body. Some have 46 chromosomes, some have 47. The ones that have 47 contain an extra 21st chromosome.
Willow has Trisomy 21.
Shortly after she was born a test was performed to confirm that. They call it a chromosomal karyotype. The test basically gives us a glimpse inside Willow’s cells. On paper, the results looked like a bunch of socks. There were 23 pairs, but one pair stood out. The 21st pair. It had an extra sock next to it.
Every cell in Willow’s body has 47 socks, I mean chromosomes. While Down syndrome is found throughout her entire body, it is just a part of her. Willow is not Down syndrome. She just happens to have it. Just like she happens to have a face so cute it pains me!