Chapter 11, Problem 28A

Summary Introduction

To describe:

A fetal test that results in the given karyotype

Introduction:

Fetal test is done on couples who suspect they might be carriers of certain genetic disorders. Older couples also want to know the chromosomal status of their developing baby. Various types of fetal tests are available for observing both the mother and the baby.

Answer to Problem 28A

Fetal tests which give results in the form of karyotypes are amniocentesis and chorionic villus sampling. They help in diagnosing chromosomal abnormalities and genetic defects.

Explanation of Solution

The following karyotype is given:

Karyotypes are micrographs of chromosomes that help in detecting chromosomal abnormalities. Fetal tests are given in the form of karyotype to diagnose any defect in chromosomes. Two such fetal tests are amniocentesis and chorionic villus sampling which help in diagnosing chromosomal abnormalities and genetic defects. They also help in diagnosing other defects. There are certain risks involved in performing fetal tests. So before performing these tests, the physician must consider previous health problems of the mother and the health of fetus as well.