Module 8 Activity 1 Phylogenetic Trees as a Way to Organize Life-1 23 PDF

Preview

Summary

biology 1010...

Description

BIOS1010 General Biology

Name ________________________

Phylogenetic Trees as a Way to Organize Life Use the App Click and Learn’s module Creating Phylogenetic Trees from DNA sequences or the website http://www.hhmi.org/biointeractive/creating-phylogenetic-trees-dna-sequences to answer the following questions. 1. According to your textbook, what is a phylogenetic tree? Relationships between species are depicted in diagrams.

2. What are two ways that we can classify species? By family, kingdoms, and common characteristics

3. Which is a better way to show how related two species are? Why? By examining DNA and identifying any relevant parallels,

4. What are the two common types of mutations that can be used to determine how related two species are? Disease-related genes and susceptibility to the disease

5. What is the technique called that allows you to compare sequences? When comparing sequences what is the most important thing you need to make sure you are doing? Aligning sequences To count how many different letters there a

6. What is a branchpoint? A split where a single lineage evolves into a new distinct one

7. How do phylogenetic trees based on DNA compare to those based on anatomical differences compare? Suggests features that are common to all species and are influenced by anatomy.

8. In this unit we are studying evolution as well as diversity, does two species being on the same phylogenetic tree mean that they evolved from each other? Why or Why not? Yes, because they are descended from a same ancestor....