Question

What is the difference between a branch and a node on a phylogenetic tree? a. A branch is a population through time; a node is where a population splits into two independent populations. b. A branch represents a common ancestor; a node is a species. c. A branch is a lineage; a node is any named taxonomic group. d. A branch is a population through time; a node is the common ancestor of all species or lineages present on a particular tree.

Name: Problem 2, Chapter 28: Biological Science
Uploaded: 2020-06-04T00:11:24-08:00
Duration: 1 min 16 s
Channel: Wade Corn

   What is the difference between a branch and a node on a phylogenetic tree?
a. A branch is a population through time; a node is where a population splits into two independent populations.
b. A branch represents a common ancestor; a node is a species.
c. A branch is a lineage; a node is any named taxonomic group.
d. A branch is a population through time; a node is the common ancestor of all species or lineages present on a particular tree.

Biological Science

Scott Freeman,… 5th Edition

Chapter 28, Problem 2

Instant Answer

Solved by Expert Wade Corn

06/04/2020

Step 1

This common ancestor represents a population that exists over a certain period of time. This is represented by a branch on the tree. Show more…

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What is the difference between a branch and a node on a phylogenetic tree? a. A branch is a population through time; a node is where a population splits into two independent populations. b. A branch represents a common ancestor; a node is a species. c. A branch is a lineage; a node is any named taxonomic group. d. A branch is a population through time; a node is the common ancestor of all species or lineages present on a particular tree.

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Key Concepts

Phylogenetic Tree

A phylogenetic tree is a diagram that represents the evolutionary relationships among different species or populations. It shows how species are related through common ancestry and divergence over time, outlining the history of evolution in a branching format.

Branch

A branch on a phylogenetic tree represents a lineage, which is a continuous line of descent. It illustrates a population or species over time, emphasizing the evolutionary path and the period during which that lineage existed before dividing into new lineages.

Node

A node on a phylogenetic tree marks the point where a lineage splits into two or more descendant lineages. It represents the most recent common ancestor of the species or groups that diverge from that point, making it a critical element in understanding the branching pattern of evolution.

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