Episode #4.7
- Episode aired Apr 25, 2011
Jem builds a musical road; Dr. Yan looks at people's ability to pick healthy mates by evaluating movement alone; Liz traces her lineage with the help of DNA.Jem builds a musical road; Dr. Yan looks at people's ability to pick healthy mates by evaluating movement alone; Liz traces her lineage with the help of DNA.Jem builds a musical road; Dr. Yan looks at people's ability to pick healthy mates by evaluating movement alone; Liz traces her lineage with the help of DNA.