Scientists have been investigating a way to recreate extinct species such as the saber-toothed cat illustrated below. Which technique would use DNA from an extinct species to recreate an organism of the species?

In vitro fertilization

Explanation:

To recreate an extinct organism it is necessary to use different biological approaches in order to produce a complete transformed organism. The DNA from the extinct organism should be extracted first and then there must be a way to insert the complete genome into a new ovule in order to create an embryo. So, in that way the technique is based on in vitro fertilization as well as extraction of genetic material from the extinct organism. However, preserving the complete genome from such old organisms might be a rare event, therefore the most realistic way to promote such recreation is modifying different genes that were silenced through the ages and are not anymore expressed on modern species that are related to the extinct organism.