The following are nucleotide sequence data. which two species are most closely related?

species 1 attcgattacccggc

species 2 attcccttagccggg

species 3 cttcgattacccggc

1 and 3
2 and 3
1 and 2
cannot tell

Species 1 and 3 are most closely related only having a difference of 1 nitrogenous base from their respective nucleotides. Species 1 has a nitrogenous base of Adenine, while species 3 has a nitrogenous base of Cytosine. Each with regard to their own nucleotides.

I’m going to go with b!