How many parts have the DNA? – Frontiers for Young Minds

Question: How many parts have the DNA?
- Keywords:
  DNA,
  part
Asked by anon-368010 about Agrobacterium: Soil Microbe, Plant Pathogen, and Natural Genetic Engineer on 23 Jun 2023
- Ryan Weir answered on 23 Jun 2023:
  
  This question could be answered in a few different ways!
  
  DNA is made up of two complementary strands. As a molecule, it has a sugar-phosphate backbone with a nitrogen base (there are 4 different bases: A, T, G, C) The two strands of DNA face each other and the nitrogen bases pair up, A with T and G with C.
  
  The DNA of the Ti-plasmid in my article is made up of 200,000 base pairs! It codes for many genes 25 of those genes are important vir genes which help the agrobacterium to infect plants.