Adaptation is thought to proceed in part through spatial and temporal changes in gene expression. Fish species such as the threespine stickleback are powerful vertebrate models to study the genetic architecture of adaptive changes in gene expression since divergent adaptation to different environments is common. they are abundant and easy to study in the wild and lab. and have well-es... https://www.chiggate.com/voyage-et-cie-5-3-wick-candle-discount/