Friday, 9 November 2018

cell biology - Why is DNA double stranded and RNA single stranded?




Why is DNA present as a double helix structure and RNA as a single helix? What causes the difference between them? What are the practical physiological differences between dsDNA and ssRNA? How are the key biophysicochemical features responsible for those differences? What is the role of these differences? Also, why is DNA preferred over RNA as the genetic material?




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evolution - Are there any multicellular forms of life which exist without consuming other forms of life in some manner?

The title is the question. If additional specificity is needed I will add clarification here. Are there any multicellular forms of life whic...