sexta-feira, 17 de abril de 2015

MO640 - Multiple-choice question 17th

Which is the correct answer for the SCJ median of the three genomes below?
  1. {Yh Zt   , Vh Wt}
  2. {Wh Xt   , Vh Wt}
  3. {Yt Zh   , Wt Xh}
  4. {Xh Wt   , Yh Zt}
  5. None of the above
by Shagali Huanca Vargas

sexta-feira, 10 de abril de 2015

MO640 question 10th

There are two columns one is of concepts and other column is the names of rearrangement events:

1.
Genome breaks in two / Two genomes join

i.
Insertion / Deletion
2.
A segment moves to a new position

ii.
Reversal
3.
Exchange of two nonadjacent segments

iii.
Transposition
4.
Gene gain or loss between genomes

iv.
Fission / Fusion
5.
A segment is reversed between genomes

v.
Block Interchange

choose the correct relationship between the concepts with rearrangement events.

a. 1-i, 2-ii, 3-iii, 4-iv, 5-v.
b. 1-ii, 2-iv, 3-iii, 4-i, 5-v.
c. 1-i, 2-ii, 3-v, 4-iii, 5-i.
d. 1-iv, 2-iii, 3-v, 4-i, 5-ii.
e. 1-v, 2-iii, 3-ii, 4-iv, 5-iii.

by Shagali Huanca Vargas

sexta-feira, 3 de abril de 2015

MO460 Multiple Choice Questions for 31th




There are
 three 
possible 
unrooted
 trees 
for 
four 
taxa, 
as 
shown


What is (are) the most parsimious tree(s)?

  1. Tree 1
  2. Tree 2 and 3
  3. Tree 3
  4. Trees 1 and 3
  5.  Tree 2
By Shagali Huanca Vargas
 

sexta-feira, 27 de março de 2015

QUESTIONS MO640 27th



Which of the statements is wrong, about the questions that arise in molecular evolution in which marcov model respond?
  
  1. Correcting for multiple substitutions
  2. Simulating sequence evolution
  3. Estimating rates of evolution
  4. Substitution scoring matrices 
  5. The rate substitution, alpha is an explicit parameter for the model  
a) 1 and 2 are incorrect
b) 2, 3 and 4 are incorrect
c) only 5 is incorrect
d) 4 and 5 are incorrect
e) all are incorrect

by Shagali Huanca Vargas

sexta-feira, 20 de março de 2015

MO640 - Multiple-choice question

Consider the following sequences: s = GAATC  and   t = GGATC. If we apply the basic algorithm of global alignment for these sequences with match weights = 1, mismatch = -1 and gap = -2, what are the values of the last row and the last column of the matrix?

a. Row: 10,-7,-4,--3, 0, 3 ; Column: -10, -7, -6, -3, 0, 3
b. Row: -10, -1,-7,-3,-2,-3 ; Column: -10, -7, -5,-3, 1,-1
c. Row: -10,-7,-4,-3, 0,-3 ; Column: -10, -5, -3, 4, -2, 3
d. Row: -10, -7, -4, -3, 0, 3 ; Column: -10, -7, -6,-3, -1,-3
e. NDA
 
By Shagali Huanca Vargas.

sexta-feira, 13 de março de 2015

QUESTIONS FOR MO640-A 12th

What is the best phylogeny for the following array states characteristics?

 (Consider that named edges mean that the cited characteristic, changed state)

a. 


b. 

c.

d.


e. None of the above

Original idea of Felipe Holanda, translated by Shagali Huanca Vargas

QUESTIONS FOR MO640-A

1. In the chemical reactions of cell, there are one element  which is used in greater amount than the others elements:

a) water
b) ions
c) nucleic acids
d) sugars
e) proteins

by: Shagali Huanca Vargas