Question

The tips and nodes of the phylogenetic tree represent X and Y. Identify X and Y.

• A. X - descendents, Y - common ancestor
• B. X - organ, Y - successive generation
• C. X - parent generation, Y - offsprings
• D. X - common ancestor, Y - organisms

Answer 1

The correct option is A X - descendents, Y - common ancestor

Classification based on the evolutionary features of the organisms is known as the phylogenetic system of classification. Phylogenetic trees are used to represent the evolutionary relationships between organisms. The tips (X) of the tree represent the descendents and the nodes (Y) on the tree represent the common ancestors of those descendants.