Evolutionary Biology Practice Questions (Q6-10) - Bioinformatics

6

ICAR JRF Bioinformatics 29 Jun 2024Shift 1

Statement Based +4 −1

Given below are two statements regarding the number of possible rooted or unrooted trees for a given number of operational taxonomic units (OTUs):

Statement (I) : For two OTUs, only two trees are possible.

Statement (II) : For three or more than three OTUs, the number of possible rooted trees is always less than the number of possible unrooted trees.

In light of the above statements, choose the most appropriate answer from the options given below.

Both Statement (|) and Statement (II) are true. Both Statement (I) and Statement (II) are false. Statement (I) is true but Statement (II) is false. Statement (I) is false but Statement ({I) is true.

7

ICAR JRF Bioinformatics 29 Jun 2024Shift 1

Statement Based +4 −1

Given below are two statements

Statement (I) : Proteins are homologous if and only if they are descended from a common ancestor.

Statement (II) : Homologues in different species, descended from a single ancestral protein, are orthologues.

In light of the above statements, choose the most appropriate answer from the options given below.

Both Statement (I) and Statement (I) are correct Both Statement (I) and Statement (Il) are incorrect Statement (I) is correct but Statement (II) is incorrect. Statement (I) is incorrect but Statement (II) is correct.

8

ICAR JRF Bioinformatics 29 Jun 2024Shift 1

Assertion & Reason +4 −1

Given below are two statements regarding the neighbor joining method of tree construction, one is labelled as

Assertion (A) : and other one labelled as Reason (R)

Assertion (A) : The neighbor joining method produces a unrooted tree topology, unless an outgroup is specified or midpoint rooting is applied

Reason (R) : The neighbor joining method assumes a constant rate of evolution.

In light of the above statements, choose the most appropriate answer from the options given below

Both (A) and (R) are correct and (R) is the correct explanation of (A). Both (A) and (R) are correct but (R) is NOT the correct explanation of (A) (A) is correct but (R) is not correct. (A) is not correct but (R) is correct.

9

ICAR JRF Bioinformatics 29 Jun 2024Shift 1

MCQ (Single Correct) +4 −1

Which of following is not a distance-based phylogenetic algorithm?

Minimum Evolution Neighbor Joining Fitch and Margoliash Method Maximum Likelihood

10

ICAR JRF Bioinformatics 29 Jun 2024Shift 1

MCQ (Single Correct) +4 −1

The five stages of molecular phylogenetic analyses are given below in random order:

(A) . Selection of sequences for analysis

(B) . Specification of a statistical model of amino acid or nucleotide evolution

(C) . Tree evaluation

Choose the correct answer (correct order) from the options given below:

A), (D), (B), (C), (E) (B), (A), (D), (C), (E) (B), (A), (D), (E), (C) (A), (D), (B), (E), (C)

Evolutionary Biology

Bioinformatics विषय एवं अध्याय

General Agriculture

Molecular Biology & Biotechnology

Preliminaries of Bioinformatics

Genome assembly

Evolutionary Biology

Statistical Genomics

Protein Structure Prediction

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Bioinformatics- ICAR JRF/SRF 2024

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