Researchers have proposed that early life on Earth used RNA as its source of genetic information and that DNA eventually replaced RNA as the source of genetic information. What aspects of DNA structure might make it better suited than RNA to be the genetic material?

1. How many genes are needed to sustain life?2. Using a flow diagram, trace the history of the discovery of the DNA as the genetic material?3. Following Chargaff’s rule, what is the percent concentration of other nitrogenous bases if the concentration of Adenine is 21%?4. In the double helix model of DNA by Watson and Crick, what is the distance between successive bases and how many base pairs will complete one full turn?5. Based on literature, the number of genes in the human genome is lower compared to rice but rice have fewer chromosomes and lesser amount of DNA than humans. What is the main reason for this difference in the DNA-gene ratio?6. What are introns? Where are they located in the DNA?7. What are exons? What is their function?8. What proportion in the human genome are actual genes?9. What sequences form most of the human genome? What is their significance in the expression of genes?10. What are tandem repeats?

Which of the following is false regarding a DNA molecule? a-It contains a double helix structure b-It stores genetic information c-It contains the nitrogen base Uracil d-It contains base pairs

RNA can function:   please explain your answer  a.A) as a non-permanent template to synthesize protein b.B) to recruit the correct amino acid during translation c.C) as part of ribosomes to synthesize protein d.D) to help initiate DNA synthesis during replication e.Only A and C Only A, B and C A, B, C and D