Question

karyotypes can be studied to determine an organisms chromosomal makeup and to detect genetic defects. down syndrome is a genetic disorder that is also called trisomy 21. what would trisomy 21 look like in a karyotype? missing chromosome 21 extra chromosome 21 missing sex chromosome extra sex chromosome

Explanation:

• Trisomy means having three copies of a chromosome.
• In trisomy 21 (Down syndrome), it is about chromosome 21, not sex chromosomes.
• So there is an extra chromosome 21.

Answer:

extra chromosome 21