Down syndrome is a common genetic disorder that is caused by having an extra copy of chromosome 21. Which method will show whether or not a baby has down syndrome?
a. Karyotype
b. Family history
c. Genetic survey
d. Punnett square
Karyotypes describe the chromosome count of an organism, so all the chromosomes would be in front of you, and it'd be easy to tell if there are 2 or 3 chromosome 21.
