TLS Online TPP Program

#Question id: 4126


Which one of the following is true about the genetic code?

#Section 3: Genetics, Cellular and Molecular Biology
  1. All codons recognized by a given tRNA encode different amino acids.

  2. It is absolutely identical in all living things.

  3. Several different codons may encode the same amino acid.

  4. The base in the middle position of the tRNA anticodon sometimes permits “wobble” base pairing with 2 or 3 different codons.

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TLS Online TPP Program

#Question id: 14143

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

The higher is the score in the alignment _________

TLS Online TPP Program

#Question id: 14144

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Gaps are added to the alignment because it ______

TLS Online TPP Program

#Question id: 14148

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Dynamic programming determines optimal alignment by matching two sequences for all possible pairs of characters between the two sequences.
Reason(R): Use of the dynamic programming method requires a scoring system to account for matches and mismatches between sequences, and a scheme for Gap penalties.

TLS Online TPP Program

#Question id: 14149

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following program is not an example of local alignment?

TLS Online TPP Program

#Question id: 14150

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following statement is incorrect about BLOSUM?

TLS Online TPP Program

#Question id: 14151

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following statement is true?
A) PAM matrices are derived from an evolutionary model whereas the BLOSUM matrices consist of entirely direct observations. 
B) Because of BLOSUM matrices have less evolutionary meaning that is why the PAM matrices are used most often for reconstructing phylogenetic trees.
C) BLOSUM matrices are entirely derived from local sequence alignments of conserved sequence blocks, whereas the PAM matrix is based on the global alignment of full-length sequences.
D) BLOSUM matrices are more advantageous in searching databases and finding conserved domains in proteins.