Earth would basically look like the Moon; minus the craters, of course. This is because with no atmosphere to hold all of the Oxygen near the surface, all life would die off fairly quickly.
The answer is; E
This shows that these organelles were once free-living organisms with their own mechanisms for reproduction which they have retained even after years of symbiotic relationship with the higher organisms. During their duplication, they also replicate their own DNA. Their DNA does not have histones (as opposed to the DNA in the nucleus of their host eukaryotic cell) similar to that of simple organisms such as bacteria.
It's empty or fairly large, making the sounds from your hands bounce of the walls and therefore having it echo
It is a dominant and that the allele for nontasting id recessive
Gene regulation is the control of when and where proteins are made.
Hope this helps :)
