AGTCGCCG (starting at nucleotide position 16422) is replaced with TGCA. This results in a frameshift after amino acid residue N2417, producing a truncated protein containing 2417 N residues followed by an additional 39 amino acid residues.
adult thorax & microchaeta
Heterozygotes show loss of thoracic microchaetae. Homozygous adult NMcd7 escapers lack 63% of thoracic microchaetae. The remaining microchaetae are evenly spaced.