Biology has three main streams Anatomy, Zoology and Botany. So you have a wide array of topics from which you can select a dissertation. Make sure you have the right content that will constitute a good dissertation and will fetch high scores. Selection may take a while as you review the various choices, just ensure you have the right information for the topic in abundance and are able to provide the best analysis. Try as far as possible to use terminology and words that are easy to comprehend and understand. Using terms that are not relatively easy to understand creates obstacles in the reader’s mind and sometimes they may not even continue to read or even if they do the level of interest is almost minimal.
First do your home work well, in other words do an extensive research and try and collect as much as relevant information as possible. Then start with trying and eliminate unnecessary information which will help you fine tune your Biology dissertation. Thereafter write your Biology dissertation in your own words, how you have understood it. You will not only be able to a good quality dissertation this way but may even be able to bring uniqueness.