PHYLOGENETIC TREES PRACTICE

Front

What are phylogenetic trees?

Back

Phylogenetic trees are diagrams that represent the evolutionary relationships among various biological species based on their physical or genetic characteristics.

Front

What is a common ancestor in a phylogenetic tree?

Back

A common ancestor is a species from which two or more species have evolved. It is represented by a node on the phylogenetic tree.

Front

What are the three domains of life?

Back

The three domains of life are Bacteria, Archaea, and Eukarya.

Front

Which two domains of life are most closely related?

Back

Archaea and Eukarya are the two domains of life that are most closely related.

Front

What does a node represent in a phylogenetic tree?

Back

A node represents a common ancestor shared by the descendant species that branch off from it.

Front

What is the significance of branch length in a phylogenetic tree?

Back

Branch length can represent the amount of genetic change or the time since two species diverged from a common ancestor.

Front

How can you determine which species are most closely related on a phylogenetic tree?

Back

Species that share a more recent common ancestor (closer nodes) are considered more closely related.

Front

What is the difference between homologous and analogous traits?

Back

Homologous traits are similar due to shared ancestry, while analogous traits are similar due to convergent evolution, not shared ancestry.

Front

What is the purpose of constructing a phylogenetic tree?

Back

The purpose is to visualize and understand the evolutionary relationships and lineage of different species.

Front

What is a clade in a phylogenetic tree?

Back

A clade is a group of organisms that includes an ancestor and all its descendants.