Discussion Instruction:
Invasive species are a problem in many ecosystems. They generally have no natural predators and outcompete the native species. This often decreases the biodiversity found in these ecosystems. While some species were brought into ecosystems intentionally, many introductions have been accidental. Multiple attempts have been made to reduce numbers of invasive species.
A new technology now exists called a gene drive. Gene drives utilize CRISPR/Cas9 to alter an organism’s DNA in a way so that the altered genes are passed on to offspring. Instead of a 50% chance of an allele for a gene being passed on, this technology can increase the chance to 100%. The technology alters an organism's genome, causing it to be homozygous for a desired trait. The trait causes females to be sterile. Within just a few generations, the trait can spread to every individual in the population. This technology could be used to wipe out an entire invasive species.
With this power there are risks. These include unintentionally introducing the gene drive into a non-target species. This could occur if two similar species were able to interbreed. This could drive the non-target species to extinction. It could also wipe out the intended species in its natural habitat. This could occur if members of the genetically altered invasive population were brought back to their original habitat. However, if it were successful, ecosystems destroyed by invasive species could be brought back to their original form, such as before the invasive species was introduced.
Answer the following prompt to begin your discussion:
Do you think this is a good way to eliminate invasive species from an ecosystem? Do you think the risks of the gene drive getting into another species are worth gaining biodiversity in an ecosystem? Explain your opinion. in 3-5 sentences