Iran received $4.2 billion in similar payments under the 2013 interim agreement with the United States and was then given another $2.8 billion by the Obama administration last year in a bid to keep Iran committed to the talks through November, when negotiators parted ways without reaching an agreement.
The DNA in our chromosomes determines how we develop. Down syndrome is caused when there is an extra chromosome. People with Down syndrome have 47 chromosomes in their cells instead of 46. They have an extra chromosome 21, which is why Down syndrome is also sometimes known as trisomy 21. Although we know how Down syndrome occurs, we do not yet know why it happens.
Typically, a baby has 46 chromosomes. Babies with Down syndrome have an extra copy of one of these chromosomes, chromosome 21. This extra copy changes the bodyâs and brainâs development and can cause mental and physical problems for the baby.ome examples of physical problems associated with Down syndrome include a birth defect of the heart or problems with the stomach, hearing, skeleton, intestines, thyroid, or eyes. People with Down syndrome usually have an IQ in the mild-to-moderate range of intellectual disabilities.