Bithorax%20fruit%20fly%20mutation%20(Campbell%20Biology%20fig.%2021.x5)

1
Bithorax fruit fly mutation(Campbell Biology
fig. 21.x5)

• The bithorax fly has two thorax segments, each
  complete with wings, bristles, etc.
• Bithorax is caused by a mutation in a single
  homeodomain gene

normal fly bithorax mutant
2
Antennapedia fruit fly mutation (Alberts
Molecular Biology of the Cell fig. 21-67)

• The antennapedia fly has two legs on its head
  where the antenna normally are found!
• Antennapedia is caused by a mutation in a single
  homeodomain protein

normal fly (Campbell fig. 21.x5) antennapedia
mutant