Question

which statement is false regarding down syndrome?
amniocentesis detects fetal dna in the mothers circulation.
the embryo inherits an extra copy of chromosome 21.
advanced maternal age is considered high risk for producing a child with this condition.
people with this condition do not typically live past 50 years of age.
learning disabilities are common with this condition.

Explanation:

Amniocentesis involves extracting amniotic fluid to analyze fetal cells, not detecting fetal DNA in maternal circulation (this describes non-invasive prenatal testing like NIPT). The other statements are true: Down Syndrome is caused by an extra chromosome 21, advanced maternal age increases risk, life expectancy has improved beyond 50 with medical care, and learning disabilities are common.

Answer:

A. Amniocentesis detects fetal DNA in the mother's circulation.