Abstract
The recessive mutation mergulhador ("diver"; symbol - mlh), which was originated from an ENU mutagenesis program, severely affects the swimming abilities of affected mice when put in a water tank. Under normal conditions, mlh/mlh mice exhibit head tilting but show no other behavioral abnormalities such as circling or head tossing. The locus for mlh is on chromosome 5 (Chr 5) and was ident…