This two-slide tutorial describes how genetic switches, regulatory elements in DNA, control gene expression.
Genetic switches can turn genes on and off in different tissues. In this Click & Learn, students explore two examples: the regulation of the Pitx1 gene in stickleback fish, which affects body morphology, and the regulation of the “paintbrush” gene in Drosophila fruit flies, which affects wing pigmentation.
enhancer, regulation, regulatory switch, tissue-specific expression, transcription
AP Biology (2019)
IST-2.A, IST-2.C, IST-2.B, IST-2.D, IST-2.E, IST-3.F
IB Biology (2016)
Vision and Change (2009)