Which of the examples of genetic testing below are prognostic tests? Which are diagnostic?

Genetic testing in a healthy teenager identifies an SNP correlated with autism.

Video transcript

Hello everyone and welcome to today's video. So, restriction fragment length polymorphism or F L P analysis is used to detect the location of a specific gene associated with a specific disease. Then which of the following is considered one of the disadvantages in detecting genetic mutations. Well, let's look over each of our answer choices. But before we do, I want you to remember that these are F L P is going to depend on restriction sequences in order to break apart these DNA sequences and then analyze them. So if no restriction sequences are present, it won't be able to go into those areas of the genome. So knowing that let's jump over into our answer choices, we have answer choice. A it can mistake one nucleotide base for another nucleotide base. Well, it's going to be incorrect because this is not one of the disadvantages. So we're going to cancel it out. Then we have it can be useful in a few organisms only. This is going to be incorrect as well as most organisms have these restrictions sequences. So we're going to cancel it out and then we happy, it can only detect mutations on regions with restriction enzymes or with restrictions sequences. We'll remember that as we spoke, only regions with restrictions sequences will be able to be entered by this restriction enzymes and cleaved, which is going to be allowing the D N A to be analyzed by these method of analysis. So answer choice B it can only detect mutations in regions with restriction sequences is going to be the correct answer to our question. And it's going to be representing one of the disadvantages of this technique. I really hope this video helped you and I hope to see you on the next one.