Please help with both questions : 1-The two polynucleotide chains in dsDNA are:   A. antiparallel   B. covalently bonded   C. semidiscontinuous   D. parallel

Choose any two of the topics (experiments) outlined below. Your response should include all of the subheadings mentioned below and also abide by the instructions provided. 1) The Phoebaus A Levene experiment: DNA is a polymer. 2) Poly-U experiment by Marshall Nirenberg and J. Heinrich Matthaei, 1961. 3) Kornberg experiment: Fidelity (accuracy) of synthesis. 4) The Fraenkel-Conrat virus experiment. 5) Meselson and Stahl mode of the DNA replication experiment. 6) The Hammerling experiment: Cells store hereditary information in the nucleus. 7) The transplantation experiment: Each cell contains a full set of genetic instruction. SUBHEADINGS 1. Introduction/Study Problem Introduction. Report on what has been done before and identify the gaps that have arisen from your research question. 2. Hypothesis [the proposed explanation made on the basis of limited evidence as a starting point for further investigations. 3. Possible research question 4. Objectives of the experiment 5. Methodology 6.…

3. The CAS9 enzyme (shown in red in the image below) is able to target and cut out specific DNA sequences. a) What are the molecular building blocks of CAS9? b) Explain in a few sentences how these building blocks come together to make something as complex and functional as CAS9. What types of interactions hold CAS9 together? c) What are the molecular building blocks of DNA? d) What type of linkage is broken when CAS9 cuts out a piece of DNA? e) How many base pairs would need to be cut out of a DNA sequence that codes for a protein consisting of 317 amino acids?

Second, Question 2