The comic · Genetics of Disease (GenD)

Week 11 of 22

OCTOBER 16 TO 20

Fiction. No real student, family or grade appears.

Drawing, panel 51: Access-to-results debate.

Should patients get raw genetic results directly, without a clinician interpreting first? Access against the risk of misreading something frightening.

Panel 51Access-to-results debate · 2026-10-16
Drawing, panel 52: PCR and primers.

Amplifying a tiny amount of DNA into enough to work with, and how the primers decide which region gets copied.

Panel 52PCR and primers
Drawing, panel 53: Gel electrophoresis lab.

Running a gel. DNA is negatively charged so it moves toward the positive end, and smaller fragments travel further through the gel.

ME

I punctured the bottom of the well. That sample is gone and you get one try.

Panel 53Gel electrophoresis lab · 2026-10-19
Drawing, panel 54: Microarray introduction.

Thousands of expression measurements at once instead of one gene at a time. The scale is the point and also the problem, because with that many measurements some will look significant by chance.

Panel 54Microarray introduction · 2026-10-20
Drawing, panel 55: Methods quiz.

Quiz on the methods so far. This is where the fifteen minutes a night either paid off or did not. For me it mostly did.

Panel 55Methods quiz
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