HomeworkLib
Question

Constructing a phylogeny Imagine a scenario with 3 species plus an ancestral sequence, and data consisting...

Constructing a phylogeny

Imagine a scenario with 3 species plus an ancestral sequence, and data consisting of a nucleotide sequence only 4 bases in length.

1. Draw a diagram for all possible phylogenetic arrangements of these three species and their known group.

2. On each phylogeny, CLEARLY indicate where and in what way there must have been a change in character state for each position in the nucleotide sequence.

Nucleotide sequence position

1

2

3

4

Species 1

C

C

T

A

Species 2

G

C

C

A

Species 3

C

A

C

G

Ancestral sequence

G

A

T

G

Circle the phylogeny or phylogenies that you drew that is/are the most parsimonious? Explain your answer in one sentence.

science   biology   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

The most parsimonious will be that requires the fewest evolutionary changes i.e., evolution with low cost or with minimal intermediates. So here the species 1 and 2 are more closely related.

0 0
Add a comment
Know the answer?
Add Answer to:
Constructing a phylogeny Imagine a scenario with 3 species plus an ancestral sequence, and data consisting...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • The geneticists studying the alien organisms have deciphered their genetic code. For...

    The geneticists studying the alien organisms have deciphered their genetic code. For familiarity, they have used A, C, G, and T to indicate the bases in this code.A comparable genetic sequence in each alien has been identified in the genes that code for eye growth. This genetic sequence has allowed the aliens to bedivided into six groups, with the single-tail, three-eye group split in half. The geneticists also studied several outgroup species (not shown) to compile alikely ancestral DNA sequence....

  • Tricky Question: For a phylogeny if you compare two sequences from two different species of zebras:...

    Tricky Question: For a phylogeny if you compare two sequences from two different species of zebras: Zebra 1: A C T T G C A T C Zebra 2: A C T C G C A T C the assumption is that the traits at each location in a sequence, represented by the nucleotide letter (A, T, C, G), is... __________________ to the matched DNA nucleotide in the other sequence or other sequences. In other words, that DNA base has...

  • Suppose species 1, 2, and 3 are endemic to a group of islands (such as the...

    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)....

  • We didn't spend much time on this in lecture and I can't get it. Thanks in...

    We didn't spend much time on this in lecture and I can't get it. Thanks in advance! Part 3. Suppose we are sure, because of numerous characters, that species 1, 2, and 3 are more closely related to one another than to species 4 (an outgroup). We sequence a gene and find ten nucleotide sites that differ among the four speciesThe nucleotides at these sites are Species 1! G C T G A T G A GT Species 2! AT...

  • TASK II DNA Sequence DNA was also collected (Table 1). You are going to use this...

    TASK II DNA Sequence DNA was also collected (Table 1). You are going to use this DNA sequence to complete the assignment Sacher, tochemelebiT.CO. DA A CARTIE CURIE CRET GARAGE MATIC I GREW E G CARETTING GUITAR HET GRATUIT TE GOOIT GENIET CARTIE CUCINE ACRET GARAGE GOTE GOOIT GRONIE I The DNA examined is 100 nucleotides of mitochondrial sequence, specifically the cytochrome Coxidase subunit I (MT-001) gene. This gene is often used as a DNA barcode to identity/differentiate animals at...

  • Part D Apply what you have learned in the video to this new scenario focusing on...

    Part D Apply what you have learned in the video to this new scenario focusing on four species of plants. Analyze the data matrix and phylogenetic tree to determine whether each statement is true or false A B C D E Plant 1 0 0 0 0 0 Plant 1 Plant 2 1 1 1 1 1 Plant 2 Plant 4 0 0 Plant 3 1 1 1 1 0 1 1 0 Plant 4 Plant 3 Drag "True" or...

  • Postlab 1: Introduction to Phylogeny and Tree-ThinkinB Directions Complete the questions below by the start time...

    Postlab 1: Introduction to Phylogeny and Tree-ThinkinB Directions Complete the questions below by the start time of your next lab. Be predse in your answers and pay attention to your reasoning. Your postlab is worth 5 points total. Use the following data matrix to answer the questions below. These data were collected as part of a conventions shown to you in lab this week to answer the questions. Great White (GW) IT-İAIcIG -[G- Tiger (T Hammerhead (H) | T |...

  • Problem 2. Basic statistics. (10 pts.) A DNA sequence S was generated by a series of...

    Problem 2. Basic statistics. (10 pts.) A DNA sequence S was generated by a series of L independent throws of a four-faced die, whose faces ‘A’, ‘C’, ‘G’, ‘T’ have probabilities πA, πC, πG, and πT respectively. You don't know these probabilities of course, and only have the sequence S to go by. How will you estimate the probabilities πA, πC, πG, and πT from sequence S ? (Show your reasoning as well as formulas for the estimates.) Problem 3....

  • 1. 5'-G G G G G G C C C-3' Enter the nucleotide sequence using the...

    1. 5'-G G G G G G C C C-3' Enter the nucleotide sequence using the capitalized abbreviations. 2. 5'-A T G G C A-3' Enter the nucleotide sequence using the capitalized abbreviations. 3. 5'-G G T A C T C C T G A C-3' Enter the nucleotide sequence using the capitalized abbreviations.

  • Could someone explain how to build a parsimonious tree? and which one has the maximum parsimony?...

    Could someone explain how to build a parsimonious tree? and which one has the maximum parsimony? (for the first question) i have a class example attached as well to show what it should look like but I dont undertand how to get the answer Problem: build the most parsimonious tree Species Site Site Site Site с т А Т CTT C A G A C E00E Ancestral Sequence тит 2. Draw out the 3 possible trees One site at a...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT