function generateRandomSeq(stringLength, weightedVal) {
let sequence = "";
let base1 = ["C", "G"];
let base2 = ["A", "T"];
for (let index = 0; index < stringLength; index++){
var randint = Math.floor(Math.random() * 100);
if (randint < weightedVal){
sequence = sequence + base1[Math.floor(Math.random() * base1.length)];
}
else{
sequence = sequence + base2[Math.floor(Math.random() * base2.length)];
}
}
return sequence
}