Question

question 36 2 pts what is the cause of down syndrome? recessive gene genetic disorder fetal alcohol syndrome second hand smoke errors in chromosomes

Explanation:

Down - syndrome is caused by an extra copy of chromosome 21 (trisomy 21), which is an error in chromosomes during cell division. It is not a recessive gene genetic disorder, Fetal Alcohol Syndrome, or related to second - hand smoke.

Answer:

errors in chromosomes