Codecademy export

main.js

// Returns a random DNA base
const returnRandBase = () => {
  const dnaBases = ['A', 'T', 'C', 'G']
  return dnaBases[Math.floor(Math.random() * 4)] 
}

// Returns a random single stand of DNA containing 15 bases
const mockUpStrand = () => {
  const newStrand = []
  for (let i = 0; i < 15; i++) {
    newStrand.push(returnRandBase())
  }
  return newStrand
}

console.log(mockUpStrand());

const pAequorFactory = (numData, dnaData) => {
  return {
    specimenNum: numData++,
    dna: dnaData,
    mutate() {
     let dnaBase = Math.floor(Math.random() * 15)
     let baseGene = this.dna[dnaBase];
     let newGene = '';
     do{
       newGene = returnRandomBase;
     }while(returnRandomBase === baseGene);
      dna[dnaBase] = newGene;
      return this.dna
    },
    compareDNA(pAequor){
      let isSame = 0;
      for(let i = 0; i < pAequor.length; i++){
        if(this.dna[i] === pAequor.dna[i]){
          isSame++;
        }
      }
      isSame/=15
      isSame*=100
      console.log(`The two strands are ${isSame}% the same.`)
    },
    willLikelySurvive = (thisdna) => {
      let count = 0;
      for(let gene in thisdna){
        if(gene === 'c' || gene === 'g')
          count++;
      }
      count /= 15;
      count *= 100;
      count >= 60 ? true : false;
    }
  }
}
let spec1 = mockUpStrand;

console.log(pAequorFactory.willLikelySurvive(spec1))