Genomics and Evolution of Color
For my NSF postdoctoral research, I am investigating the genetic basis and evolutionary origins of color in several exceptional natural systems with brilliant color variation.
Why study Color?
Color is one of the most dramatic and important traits across biodiversity. It serves critical physiological and behavioral functions including thermoregulation, durability, predator-prey interactions, and mating. It is ideal for studying evolution because it is often under strong selection and is easily scored. Studies of coloration have led to huge advancements in our understanding of genetics that have far-reaching across Biology.
Decoy Coloration
One species I am investigating is Gilbert's Skink (Plestiodon gilberti) in California. This species has evolved bright tails as a decoy to lure predators away from the body. This lowers the chance of a lethal attack by allowing them to drop their tail and escape. Gilbert's skink is unique in having distinct populations with either bright blue or bright pink tails, providing a unique opportunity to unlock the genetic basis of these colors.
From Genes to Cells
I am scanning the genomes of over 100 individuals to pinpoint the genes underlying color variation. Alongside the genomic data, I am using transcriptomics and electron microscopy of blue vs. pink skin to understand the downstream regulatory pathways controlling color. I will unlock the evolutionary origins of the color variation by assessing selective pressures between populations.
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This project is connected to the California Conservation Genomics Project which recently sequenced a reference genome for this species.
