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About: metzma00

PhD student in the Affolter Lab, Biozentrum, University of Basel, Switzerland

Posts by metzma00: – manage your fly stocks and crosses

Posted by on February 26th, 2016

Some time ago I wrote about a webpage I’ve created to manage genetic fly crosses. In that past post, I’ve promised a new version of the software, and I’m happy to announce it here. The software can be reached under the address Many many things changed from the previous version, some features: User accounts[…]

Flippase recognition target: orientation matters, so why care?

Posted by on April 16th, 2014

FRT sites are used often (at least in Drosophila) for inducing deletions or “flipping out” of markers in transgenic constructs. When there are two FRTs sequences in tandem, after inducing flippase the DNA sequence that is between these two sites will be deleted. If two FRT sites are facing each other (or looking away), the[…]

silicoCROSS: a help in genetic crosses

Posted by on August 12th, 2013

I’m quite a lazy person, and as such I like to find solutions to boring and repetitive tasks. One of those is the drawing of punnett squares in Drosophila genetics. I wrote a little software (accessible here:, that does basically that: drawing punnett squares. When you access the software you are asked how many[…]