What techniques can scientists use to determine if a particular transgene has been integrated into the genome of an organism?

Video transcript

Hi everyone welcome back. Let's look at our next problem blank Are organisms born from pseudo pregnant mice that have both normal and knockout stem cells. So let's kind of focus in on this that they have both normal and knockout stem cells. This means that the genome in the cells of this organism is not the same in every cell. So that's key there in distinguishing the term we want. So we have an organism in which different cells have a different genome from each other. So the term we want here is choice B. Chimeras coming from the creatures of legend that were made up of different you know the head of a bird and the tail of a lion. So in this case that reminds us that this animal is made up of cells with different genomes. So let's look at our other answer choices. To understand the distinction obviously Choice D. Is not correct. That's none of the options is correct. Since we have on the answer of chimera, choice A. Is transgenic organisms. And this might be a little confusing in terms of we might think this is our answer. Transgenic organisms are ones in which you have a gene or a specific piece of D. N. A. From one organism that's incorporated into the genome of another. However in transgenic organisms all cells have the same DNA. So that D. N. A. Does have DNA from another species incorporated but it's the same throughout the whole entire organism. Every cell the same genome as opposed to our crime eras are made up of cells with different genomes. So that's why is not correct mm choice E. Hybrids. Again, a hybrid being the result of the mating of two different species. So they have DNA from two different species. But again all cells have the same DNA. So they've inherited DNA from two different species in terms of their parental DNA, but the same throughout the whole organism. So that's why that's not a correct choice. So again, organisms born from pseudo pregnant mice that have both normal and knockout stem cells are Choice B cameras. See you in the next video.