4/21: Prosecutors urge Boston jurors to choose death for Tsarnaev; Will new genetic test for breast cancer be a gamechanger?

Prosecutors in the Boston Marathon bombing trial spent Tuesday trying to convince a jury to choose the death penalty as the punishment for Dzhokhar Tsarnaev; color Genomics has come up with a saliva kit that tests for two types of gene mutations linked to breast cancer and ovarian cancer.