Answers created by FatemaZahra R.

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• Why it's important to know the location of an intermediate is upstream or downstream? the concept says " "if a strain with a mutant enzyme that blocks a particular step in a linear metabolic pathway can grow when an intermediate is added to the growth.."
  
• How do lipid bilayers form?
  
• Why are chromosomes important to heredity?
  
• How does DNA methylation affect gene expression?