TRAIT hair color eye color feet shape Size OUTGROUP Black hair Green eyes no webbing Short SPECIES 1 Red hair Blue eyes no webbing Tall SPECIES 2 Black hair Blue eyes webbed feet Short SPECIES 3 Red hair Green eyes webbed feet Tall Based on the character table above, which of the three phylogenetic trees is most likely to be correct based on the concept of parsimony? outgroup TREE 1 species 1 species 2 species 3 outgroup TREE 2 species 1 species 3 species 2 outgroup TREE 3 species 2 species 3 species 1 O TREE 3 O ALL ARE EQUALLY LIKELY TO BE CORRECT O TREE 1 O TREE 2
Added by Brandy U.
Close
Step 1
Choose the outgroup species. In this example, we will use species 1 as the outgroup. Show more…
Show all steps
Your feedback will help us improve your experience
Sri K and 72 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Use this phylogenetic tree to answer the questions below: 1. Interpret the phylogenetic tree shown below to answer the following questions: [½ pt each = 3 pts total] a. Highlight the node (branch point) that represents the most recent common ancestor of A and B. b. Which species is the outgroup? Highlight the one: A B C D E F G c. Which species have trait 1? Highlight all who do: A B C D E F G d. Which species have trait 2? Highlight all who do: A B C D E F G e. Which species is/are most closely related to E? f. Which species is/are most closely related to F?
Sri K.
Adi S.
Suppose species $1,2,$ and 3 are endemic to a group of islands (such as the Galápagos) and are all descended from species 4 on the mainland (which will serve as an outgroup; its very large population size means that no new mutations have become fixed in its population in the time since the islands were colonized). We sequence a gene and find ten nucleotide sites that differ among the four species (among many other loci that do not vary. The nucleotide bases at these sites are Species 1: GCTGATGAGT Species 2 : ATCAATGAGT Species 3: GTTGCAACGT Species 4: GTCAATGACA Estimate the phylogeny of these taxa by plotting the changes on each of the three possible unrooted trees and determining which tree requires the fewest evolutionary changes.
Farhan A.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD