What aspect(s) of genetics do you think most excites students in your classes?

What aspect(s) of genetics do you think most excites students in your classes?
Trends Genet. 2018 Feb 09;:
Authors:
PMID: 29433761 [PubMed - as supplied by publisher]

Source: Trends in Genetics : TIG - February 9, 2018 Category: Genetics & Stem Cells Tags: Trends Genet Source Type: research