Download TEACHER NOTES

BARR BODY LESSON
TEACHER NOTES
 Teachers should make sure that students have been taught
a.
b.
c.
d.
e.
f.
g.
mitosis
meiosis
karyotypes
genetics
sex-linked traits
use of light microscope
wet mount preparation
 Laboratory Exercise
Answers to Analysis Questions
1. Accept all reasonable descriptions. Students should
recognize the general uniformity of one cell type.
2. Students should see the cell membrane, cytoplasm, nuclear
envelope, nucleus, nucleolus in both male and female cells,,
and the Barr body in the female buccal cell.
3. The Barr body.
4. The Barr body should be just inside the nuclear envelope.
5. The fetus is a male. There is one Barr body. The fetus will
exhibit Klinefelter’s syndrome.