filzkorper
tracheal section
The filzkorper do not elongate and trachea do not form properly. The oesophagus, gastric caecae and Malpighian tubules are unaffected.
trh alleles fall into an allelic series. From strongest to weakest: trh1 = trh8 > trh7 > trh10512 > trh6 > trh5 > trh4.
trh alleles fall into an allelic series. From strongest to weakest: trh1 = trh8 > trh7 > trh10512 > trh6 > trh5 > trh4.