3 Answered Questions for the topic protein evolution
Is it known how the first viruses formed?
[The oldest known virus](http://www.livescience.com/16015-oldest-viruses-insects.html) is known to have infected prehistoric insects 300 million years ago. A virus is basically a parasitic strand... more
How did genome duplication in jawed vertebrates allow gene specialization?
I am currently reading from Chapter 15 in Principles of Life, 2nd Edition:>Many gene duplications affect only one or a few genes at a time, but in some cases entire genomes may be duplicated.... more
What is the evolutionary reason behind the fragility of teeth?
Almost all organs in the human body have a rather large threshold within which the organ or tissue is capable of repairing itself using materials supplied by the body, whether it's made from... more