Fur color in a population of guinea pigs varies greatly. What component of a strand of DNA is responsible for the genetic variations among the guinea pigs fur color? the number of chromosomes the organisms have. the number of chromosomes the organisms have. the sequence (order) of the sugar and phosphate that make up the backbone of the DNA strand. the sequence (order) of the sugar and phosphate that make up the backbone of the DNA strand. the sequence (order) of the nitrogenous base pairs that make up the organisms DNA. the sequence (order) of the nitrogenous base pairs that make up the organisms DNA. the strength of the weak hydrogen bonds that hold the nitrogenous bases together. the strength of the weak hydrogen bonds that hold the nitrogenous bases together.