Tasmanian Devil at the Zoo Duisburg, in 2017. The only zoo in Germany that keeps them. (Credit: Mathias Appel / CC0)
Sabhrina Gita Aninta
Nowadays we know to avoid mating with close relatives so that your children are healthy. As close relatives accumulate similar genetic diversity, mating between relatives of most species can lead to genetic diseases in their offspring. Humans have a lot of options; there are 7 billion of us worldwide. But how about an endangered species with less than 10 individuals in the wild?
Forest Tundra on the Taymyr Peninsula between Dudinka and Norilsk near Kayerkan, Russia, taken in 2016. Was it always look like this? Should it look like this?
Image Credit: Ninaras, CC BY 4.0, Image Cropped
Although obtaining ancient DNA can be quite a headache, it is a very rewarding headache. After all the work that goes into obtaining DNA from a bone, fur, hair, or Viking’s leftover meal, researchers have to make sense of the apparent random sequence of nucleotide bases. But once that’s taken care of, there are a series of really interesting questions we can start to answer. Were DNA strands that are present in the modern times inherited from the past? How similar are today’s species to their forebears? Where is my pet velociraptor?
The ultimate goal of species conservation is to preserve a species’ existence in the natural world. To effectively do this, we must know the extent of “species” that we want to conserve. That may sound simple, but the concept of hybridisation can blur the lines of where one species begins and another ends beyond recognition.
Whilst cichlid fish might look incredibly diverse, they are actually all relatively genetically similar. So how do we define genetic diversity, and how do we conserve it? (Image Credit: Emir Kaan Okutan, Pexels Licence, Image Cropped)