DNA structure of preface,need,methodology,observation
Answers
Watson and Crick used stick-and-ball models to test their ideas on the possible structure of DNA. Other scientists used experimental methods instead. Among them were Rosalind Franklin and Maurice Wilkins, who were using X-ray diffraction to understand the physical structure of the DNA molecule.Three major types of RNA are mRNA, or messenger RNA, that serve as temporary copies of the information found in DNA; rRNA, or ribosomal RNA, that serve as structural components of protein-making structures known as ribosomes; and finally, tRNA, or transfer RNA, that ferry amino acids to the ribosome to be assembled.The structure allows for the DNA to be tightly packed into chromosomes. It also provides an extremely stable backbone with the negatively charged phosphates pointing to the outside of the molecule. This charge aids in the attachment of other molecules to the strand of DNA.
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