Deletion of two amino acids (Trp85 and Val86).
Homozygous Dsim\CoVIIaDel.W85.V86 mutants show higher fertility than heterozygous and wild-type controls.
Homo- and heterozygous flies harbouring Dsim\CoVIIaDel.W85.V86 show reduced survival compared to wild-type.
Older flies carrying homozygous Dsim\CoVIIaDel.W85.V86 display reduced physical activity compared to wild-type.