BIOL 2400 Final: Developmental genetics notes
27 Feb 2018
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Document Summary
Developmental genetic toolkit and hopeful monsters of the. Chapter 10 (adaptation from genes to traits): finch beaks new genes. New uses : shape changes in finch beaks late development. Longer beaks: higher calmodulin expression: ancient genetic toolkit in segmented animals, regulate early development of body form. Hox gene order reflect order of body segments. Hox genes control axes of symmetry and location and types of appendages. Gene expression variation drive adaptive radiation in beaks of. Contribution of the different skeletal structures to beak variation in. Not responsible for: the distinct beak morphologies in geospiza are generated by differences in the time and place of expression of different genes. Changes in the timing, amount or location of expression of genes during early development can alter the shape or properties of an adaptive trait such as beak shape in darwin"s finches. Dorsal-ventral nerve cord or gut patterning is conserved but flipped.
