Three organisms have part of a gene for a digestive enzyme sequenced, and homologous parts of those sequences are shown below. One organism is a fungus and the other two are green algae.OrganismSequence1AGATTCGATTCGCTTTAAA2ACAGTCGAT_CGGCATAAA3AGAT_CGATTCGGTTTAAABased on this data, identify which organisms are which and explain why.
Based on the given sequences, we can make some educated deductions to identify which organisms are which:
1. Organism 1: AGATTCGATTCGCTTTAAA
2. Organism 2: ACAGTCGAT_CGGCATAAA
3. Organism 3: AGAT_CGATTCGGTTTAAA
To identify the organisms, we need to compare the homologous parts of the gene sequences.
Looking at the first position, Organism 1 and Organism 3 have the same nucleotide (A), while Organism 2 has a different nucleotide (C). This suggests that Organism 2 is different from Organism 1 and Organism 3.
Moving to the second position, Organism 1 and Organism 2 have the same nucleotide (G), while Organism 3 has a different nucleotide (A). This suggests that Organism 3 is different from Organism 1 and Organism 2.
Now, as for the third position, Organism 1 and Organism 3 have the same nucleotide (A), while Organism 2 has a different nucleotide (G). This indicates that Organism 2 is different from Organism 1 and Organism 3.
Based on the given data, we can conclude that Organism 2 is the fungus, as it consistently differs from Organism 1 and Organism 3 in all three positions.
Therefore, Organism 1 and Organism 3 must be the green algae.