What is different with retroviruses in reproduction is that they do not kill their hosts at first because they can still insert their own genome. This process is what is known the reverse transcription. This is done by different proteins.
Why can’t you just write a paragraph?
There is no difference in mental abilities between genders
He sailed on the HMS Beagle to serve as a naturalist.
There is no such thing ? It can't be an organism if it does not do any of the above
