Scientists analyze sequences of genetic material from two siblings. They determine that one characteristic is different between them.

Which of the following best describes the next steps the scientists should take to determine the exact difference?\

a. They should look at the sequence of genes in the chromosomes for that trait.


b. They should look at the sequence of the DNA bases in the gene for that trait.


c. They should look at the sequence of genes in the DNA bases for that trait.


d. They should look at the sequence of chromosomes in the gene for that trait.