- The phylogenetic tree shows evolutionary relationships among various organisms.
- "You!" (humans) are most closely related to chimpanzees, as indicated by the branch point with 99% support.
- Humans and chimpanzees share a more recent common ancestor with cattle than with opossums, platypus, or chicken.
- The group including humans, chimpanzees, cattle, mice, and rats forms a clade with 100% support at the node connecting mice and rats.
- Opossum branches off before the human-chimpanzee-cattle clade, indicating it is less closely related to humans than cattle is.
- Platypus and chicken form a clade that diverged earlier than the mammalian groups above them.
- Frog is more distantly related to mammals than zebrafish, based on the branching pattern.
- Japanese Pufferfish and Green-spotted Pufferfish are sister taxa, sharing a recent common ancestor with 100% support.
- Sea Anemone and Silkworm are outgroups, representing the most distantly related organisms in this tree.
- Support values (e.g., 60, 66, 67, 70, 75, 98, 99, 100) indicate the confidence level of each branching point, with higher numbers reflecting stronger statistical support.
Parent Tip: Review the logic above to help your child master the concept of constructing a phylogenetic tree worksheet.
