If further testing of the mutations in Problem 18 yielded the following results, what would you conclude about mutant 5? Mutants Results 2, 5 - 3, 5 - 4, 5 -

Video transcript

Hi everyone. Let's look at our next question. It says the development of resistance among E. Coli in the absence of stimulus such as bacteriophage T. one is called. And we have choices of spontaneous mutation, induced mutation, immediate mutation and continuous mutation. Well our question asked us about the development of resistance in the absence of stimulus. So when you have no stimulus to the to a mutation to develop a mutation, The term we're looking for is choice a spontaneous mutation. So spontaneous mutation is something that can just arise in nature without needing a mutation. Um or the presence of something like the bacteria HT1 to cause that mutation. So let's look through our other answer choices. And induced mutation is one in which you need the presence of a mutation to make that happen. So in this case we're talking about something that arises without anything around. So that's why a spontaneous mutation happens naturally without something that would spur on mutations. So that's why Choice B is not our answer here. Choice C says immediate mutation. Their immediate would mean like right away. But that's not we're not talking about timing. We're talking about whether they arise naturally. So that's why C. Isn't correct choice D. Is continuous mutation in this sense? I think the question to be asking about continuous variation when you have a variation in a trait um along the spectrum. So between two extremes. So something like um height in humans versus blood type. So you're talking about mutations that cause variation um by degrees. But again that's not describe what we're talking about here here, we're talking about the development of resistance which would be, you know, either yes or no the bacteria, the resistant or not. So Choice D. Is not correct. So again, the development of resistance among sequelae in the absence of stimulus such as bacteria of HT1 is called choice a spontaneous mutation. See you in the next video.