Karyotype
Karyotyping is a method of determining the number
and types of chromosomes with an individual
Most karyotyping is done at the fetus stage, where
amniotic fluid or fetal cells from the chorionic villi are
used as the tissue sample (see page 215 fig. 7.36)
Once isolated the condensed chromosomes are isolated
and photographed. A karyotype diagram is then
devised from the photograph based on physical size of
the chromosomes.