Forms of Tree Representation MCQ

Test your knowledge with important Forms of Tree Representation MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Forms of Tree Representation MCQs at Bissoy

• In Jukes–Cantor Model to correct evolutionary distances, A formula for deriving evolutionary distances that include hidden changes is introduced by using a logarithmic function. It is ____ b) dAB = −(3/4) ln c) dAB = −(3/4) log d) dAB = −(3/4) ln
  ক

  dAB = −(3/4) log

  খ

  1 − (4/7)pAB

  গ

  1 − (4/7)pAB

  ঘ

  1 − (4/7)pAB
• DNA sequences are sometimes more biased than protein sequences because of preferential codon usage in different organisms.
  ক

  True

  খ

  False
• Protein sequences can remain the same while the corresponding DNA sequences have more room for variation.
  ক

  True

  খ

  False
• In many cases ______ sequences are preferable to ______ sequences because they are relatively ____ conserved.
  ক

  protein, nucleotide, less

  খ

  nucleotide, protein, less

  গ

  protein, nucleotide, more

  ঘ

  nucleotide, protein, more
• For studying the evolution of ________ divergent groups of organisms, one may choose either ______ nucleotide sequences, such as ribosomal RNA or protein sequences.
  ক

  less widely, slowly evolving

  খ

  more widely, slowly evolving

  গ

  more widely, rapidly evolving

  ঘ

  less widely, rapidly evolving
• Which of the following is incorrect statement about Molecular Markers?
  ক

  For studying very closely related organisms, protein sequences are preferred

  খ

  The decision to use nucleotide or protein sequences depends on the purposes of the study

  গ

  For constructing molecular phylogenetic trees, one can use either nucleotide or protein sequence data

  ঘ

  The decision to use nucleotide or protein sequences depends on the properties of the sequences
• It can be computationally very demanding to find a true phylogenetic tree when the number of sequences is large.
  ক

  True

  খ

  False
• For unrooted trees, the number of unrooted tree topologies (NU) is ________
  ক

  NU = (2n− 5)!/2n−3(n− 5)!

  খ

  NU = (2n− 5)!/2n−3(n− 3)!

  গ

  NU = (2n− 5)!/2−2(n− 3)!

  ঘ

  NU = (2n− 5)!/2n(n− 3)!
• The number of rooted trees (NR) for n taxa is ______
  ক

  NR = (2n− 3)!/2n+2 (n− 2)!

  খ

  NR = (2n− 3)!/2n (n− 2)!

  গ

  NR = (2n− 3)!/2n−2 (n− 5)!

  ঘ

  NR = (2n− 3)!/2n−2 (n− 2)!
• Sometimes a tree-building method may result in several equally optimal trees. A consensus tree can be built by showing the commonly resolved bifurcating portions and collapsing the ones that disagree among the trees, which results in a polytomy.
  ক

  True

  খ

  False
• Which of the following is an incorrect statement about Newick Format?
  ক

  It was designed to provide information of tree topology to computer programs without having to draw the tree itself

  খ

  In this format, trees are represented by taxa excluded in nested parentheses

  গ

  In this linear representation, each internal node is represented by a pair of parentheses

  ঘ

  For a tree with scaled branch lengths, the branch lengths in arbitrary units are placed immediately after the name of the taxon separated by a colon