Scientists can determine relatedness among organisms by comparing partial amino acid sequences. The table shows four partial amino acid sequences from four organisms.

Question

Scientists can determine relatedness among organisms by comparing partial amino acid sequences. The table shows four partial amino acid sequences from four organisms.

Organism 1
SER LEU VAL GLU
Organism 2
LEU SER ASN VAL
Organism 3
ALA LEU SER GLU
Organism 4
THR LEU SER GLU
(1 point)
• Organism 1
• Organism 2
• Organism 3
• Organism 4

Answer 1

Based on the partial amino acid sequences provided, it can be determined that Organism 1 and Organism 2 are the most closely related, as they share the same amino acids (SER, LEU, VAL, GLU), although in a different order. Organism 3 and Organism 4 are less closely related to Organism 1 and Organism 2, as they have some different amino acids in their sequences. Overall, Organism 2 is the most closely related to Organism 1.