Department of Biology

Double feature: Hybrid incompatibilities in gene networks // Early sex-chromosome evolution in plants

Dr. Rafael Guerrero
North Carolina State University

October 19, 2022
4-5pm

Hosted By Dr. Louis-Marie Bobay

This talk will be split in two parts. First, I will explore a network framework for the study of genetic incompatibilities, epistatic interactions involving fixed differences between diverging populations. I find that the underlying properties of the network affect the expected faster-than-linear accumulation of genetic incompatibilities, and that the agglomeration of incompatibilities into higher-order clusters is more common than previously thought. In the second part, I discuss a new system for the study of sex-chromosome evolution in plants, and use gene expression data to test theoretical predictions of sexual dimorphism and the divergence of sex chromosomes.