Question

What does a karyotype show?
A. the genetic abnormalities
B. the relationships among family members
C. the carriers of a genetic disorder in a family
D. the alleles on each chromosome

Answer 1

i thought D

Answer 2

A karyotype is an actual photograph of the chromosomes from one cell. Karyotypes are usually done using blood cells, fetal skin cells (from amniotic fluid or the placenta) and occasionally bone marrow cells. While a karyotype is used to confirm that a person has Down syndrome due to an extra chromosome number 21, it actually gives much more information.

From a patient’s perspective, a karyotype is a simple blood test. But what happens to the blood after it is collected is actually quite complex. This step by step guide will help you understand why it takes so long (up to a week) to get karyotype results.