Most mutations are thought to be deleterious. Why, then, is it reasonable to state that mutations are essential to the evolutionary process?

Video transcript

Hi everyone welcome back. Here's the next problem. It says a point mutation that changes a nucleotide with another of similar category is called. So we recall that point mutations. Change change just a single base pair in our D. N. A. Sequence. So if the change changes a nuclear tied with another similar category, so appearing to peering or pyramid into pyramid Dean is what that means. That kind of point mutation is called a choice A transition mutation. We look at our other answer choices. Choice B is trans version mutation. This would be changes the nuclear tied to a different category. So changes replaces a perimeter with appearing or vice versa. Choice. So Choice B is not our answer. Choice C. Is an insertion mutation that doesn't change one base pair to another. It, as its name suggests, inserts one or more base pairs so that's not a correct answer. And then of course, Choice D deletion mutation deletes one or more base pairs so that's not a correct answer. So again, a point mutation that changes a nucleotide with another of similar category is called choice a transition mutation. See you in the next video