The region containing the promoter, transcript, and termination of snRNA:U1:21D are precisely deleted.
Deletion of snRNA:U1:21D, extending from -20 to +276.
snRNA:U1:21DΔ, snRNA:U1:95CaΔ has viable phenotype
snRNA:U1:21DΔ, snRNA:U1:95CaΔ has lethal phenotype
snRNA:U1:21DΔ, snRNA:U1:95Ca [+]/snRNA:U1:95CaΔ has viable phenotype
snRNA:U1:21DΔ, snRNA:U1:82EbΔ has viable phenotype
snRNA:U1:21DΔ, snRNA:U1:95CbΔ has viable phenotype
snRNA:U1:21DΔ, snRNA:U1:95CcΔ has viable phenotype