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Terrible2s's picture

Dumpy wings

Today we looked at Mendelian Genetics and its application in regards to fruit flies. To begin with, we chose a trait that we wanted to explore.  This trait was "dumpiness" of the wings. When tested, we found that the "dumpy" trait was consistent with the ratio we learned in class: 3:1. Next, we looked at the color of the fruit flies and chose ebony as our example. We also found that, when tested, the ebony trait was consistent with the 3:1 ratio. After concluding that these two traits were true breeding, we decided to create a dihybrid cross between them. We then found that when these two traits were combined, they were consistent with the 9:3:3:1 ratio we also learned about in class. During our experiment, we tried a variety of traits (yellowness, eyeless, etc.) but ultimately reported these traits because we are always striving to be less wrong. Our results were as follows:

  Females Males
++ 284 278
DP, + 83 97
+, E 94 86
DP, E 33 28

-Lili and Terrible2s

 

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