One of the great things about science is that it never stands still and that evidence and observation is always emerging which either challenges existing theories or further supports them.
In the field of Biology the ability to rapidly sequence genomes is now providing vast new amounts of evidence about the relationship between the various forms of life on his planet, including humans, and showing us more clearly as time passes exactly how the various forms of life we see today evolved.
Its been known for a long time that Humans are genetically primates and most closely related to the Great Apes.
However before gene sequencing became available it was not possible to specify exactly the genetic changes that occurred in our common ancestor which led to the emergence of humans and the different great apes.
This video is worth watching because it explains very clearly the results of more recent genome sequencing and how this is throwing light on the relationship between man and the other primates.