Joe Holden is a third year undergraduate double majoring in biology and chemistry. During his freshman and sophomore years, he performed research in the Earley Lab understanding how ecological variations influenced various fitness parameters in kryptolebias marmoratus. This work involved dissections, histology and PCR analysis. He is now a member of Dr. Cieśla’s research group and is involved in the development of novel tools to study host-microbiome interactions mediated through ectopic olfactory receptors. This research involves the use of high-performance liquid chromatography, gas chromatography, and mass spectrometry. He eventually plans on pursuing a PhD in biochemistry and molecular biology and continue with a career in research.