Eye color and dominant vs. recessive alleles

40:54that's the protein that gives brown eye color. Okay. And if you've got two versions of that protein then you're going to create melanosome and you're going to have brown eyes. >> If you've got single version of the protein body can still create melanosome. But if you've got no functional melanosome then it's kind of like the naked retina. Mhm. >> Or not retina, iris is the color that you're going to see. It's a bit more complicated obviously because you have like green and hazel and so there's different versions of even melanosome and there's other little things that go in. But by and large, this is how dominant versus recessive works >> and this is why people have to wear sunglasses if they have light colored eyes because they don't have that melanosome that provides that

41:35>> additional protection for the eyes as as one one example. >> Exactly. So, and so far what we've been covering is effectively it's still been Mandelian. Even like Thomas Hunt Morgan talking about the packages coming together, it's still Mandelian in some sense, right? I mean, you're you're kind of proving his point that they come in these packages. It's just that some of them are correlated. There are now a a growing there is now a growing body of work that there are a lot of exceptions. >> And so, that's what we're going to get to next. But before we do that, we've got some housekeeping. >> Some housekeeping here. So, we are super excited everybody to have our resident PhD Christian Achowdery back in the studio. We I'm so excited for our