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What type of evidence is used to construct phylogenetic trees?

  1. Genomic data

  2. Fossil data

  3. Morphological data

  4. Behavioral data

The correct answer is: Morphological data

Phylogenetic trees are constructed based on the evolutionary relationships between organisms. While genomic data, fossil data, and behavioral data can provide valuable information about an organism's evolutionary history, they do not directly show the evolutionary relationships between different species. Morphological data, on the other hand, refers to the physical characteristics of organisms and is often used to determine their evolutionary relatedness. Therefore, morphological data is the most commonly used type of evidence in constructing phylogenetic trees.