Phylogenies are created based on the principle that all species descending from a recent common ancestor                   . a. should be identical; b. should share characteristics that evolved in that ancestor; c. should be found as fossils; d. should have identical DNA sequences; e. should be no more similar than species that are less closely related

Video transcript

Hello everyone. And in today's video we have the following problem. We need to identify the incorrect statement regarding Fila ginny's. Remember that we're looking for the incorrect statement within our answer choices. And I want you to recall from previous videos just what a fella ginny looks like and in case you forgot, here's a hand drawn version of one. Now a fellow genetic tree. What it does is that it just portrays hypothesis of the evolutionary history of a certain group of organisms and how these relationships work and how related these organisms are to each other. So now that we know this, let us go over answer choices beginning by answer choice. A Sofala ginny or fill a genetic trees or diagrams that represent the evolutionary history among organisms or the evolutionary relationships among organisms. As we see here, like withdrew. Yes, this is true. And this is going to be a correct answer choice. So we're going to cancel allow these religions represent evolutionary histories or relationships among organisms. Now let's move on to answer choice. B in trees to species are more related if they have a more recent common ancestor, this is actually going to be a true statement as well. I say that we have these two organisms that share these common ancestors. These two organisms are going to be more related than this organism and these organisms because every time we see a red mark here in the fall Athenian means a new characteristic has arisen and these organisms contain all of the characteristics that have evolved up to that point. So they're going to share more characteristics than these two organisms. So this is actually going to be a correct statement. And we're going to cancel it out because we're looking for the incorrect one. We know we have option. The all ancestral species should share characteristics that evolved in that ancestry. Like we spoke before. All of these red markings in the allegheny are going to be characteristics that evolved in that period of time. And so if we have species or just groups of organisms that evolved later, they're going to show they're going to share all of the characteristics that have evolved up to a point. So this is a correct statement and it's all leaves us with answer choice C, which is states that follow generic trees are scientific facts of nature and the scientific facts. It's actually an incorrect statement because these theologians, our hypothesis of the evolutionary history or relationships of a certain group of organisms. They're not facts or theories and they may change when new fossil information or just new information becomes available regarding these organisms. And so we're going to highlight this as being the final answer to our question. Thank you very much for sticking around until the end of this video. And I hope this video helped you