Author Question: What is the most common chromosomal abnormality that causes Down syndrome? a) one number 21 ... (Read 65 times)

swpotter12 · **on:** Jun 22, 2018

What is the most common chromosomal abnormality that causes Down syndrome?

a) one number 21 chromosome
b) two number 21 chromosomes
c) three number 21 chromosomes
d) absence of number 21 chromosomes

Question 2

Head Start

a) is a federally funded program to prepare low-income children to succeed in the regular school setting.
b) uses medical and psychological interventions only.
c) is targeted towards children with developing conduct disorder and ADHD.
d) provides meals to needy children.