Mendel's
garden
(Augustinian
Monastery
of St. Thomas, Brno, Czech
Republic)
Mendel's
garden
(Augustinian
Monastery
of St. Thomas, Brno, Czech
Republic)
Mendel conducted
his
experiments both
in a greenhouse and in outdoor garden plots. A statue of
Mendel
appears in the background. The garden plot shown here
is
laid out as a series of crosses between flowers. The parental
plants (P) have red and
white
flowers (top row). From these
pure-breeding
red-
and white-flowered plants, the F1 is
uniformly red (second
row). The third row shows the result of an F2
cross: note the 3:1 ratio
of
red to white flowers. The remaining four
rows show the result of a dihybird cross: it is possible to
discern Tall and Short phenotypes.
Homework: Evaluate the
results of the dihybrid cross. Is
there anything unusual about the results?