Changes

== Phenotyping ==

== Phenotyping ==

A swim test was used to phenotype ''het'' mice, ''tlt'' mice, and their littermates. Wiltype mice (+/+) swam toward the side of the pool. Homozygous ''het'' mice (''het''/''het'') and ''tlt'' mice (''tlt''/''tlt'') were identified by their inability to swim while keeping their head above water; instead, they swim in circles and somersault towards underwater. Heterozygotes (''het''/+ or ''tlt''/+) were identified by an intermediate phenotype.

A swim test was used to phenotype ''het'' mice, ''tlt'' mice, and their littermates. Wildtype mice (+/+) swam toward the side of the pool. Homozygous ''het'' mice (''het''/''het'') and ''tlt'' mice (''tlt''/''tlt'') were identified by their inability to swim while keeping their head above water; instead, they swam in circles and somersault towards underwater. Heterozygotes (''het''/+ or ''tlt''/+) were identified by an intermediate phenotype.

== ''het'' ==

== ''het'' ==