Which of these scenarios would MOST likely lead to a frameshift mutation that affects the downstream amino acid sequence?
Substitution of one nucleotide for another
Deletion of three nucleotides in the coding sequence
Insertion of two nucleotides in the coding sequence
Inversion of a segment of DNA containing a multiple of three nucleotides
Related Questions
The degeneracy of the genetic code means that:
Each codon codes for multiple amino acids.
Only one codon codes for each amino acid.
Multiple codons can code for the same amino acid.
The code is different in different organisms.
An RNA molecule contains 1200 bases and codes for a protein with 400 amino acids. If the base at position 601 is deleted, shortening the RNA to 1199 bases, how many codons will be altered?
1
200
201
400
Statement-I The codon โAUGโ codes for methionine and phenylalanine.
Statement-II: โAAAโ and โAAGโ both codons code for the amino acid lysine.
In the light of the above statements, choose the correct answer from the options given below.
Statement I is correct but Statement II is false
Statement I is incorrect but Statement II is true
Both Statement I and Statement II are true
Both Statement I and Statement II are false
The scientist who was awarded Nobel-Prize in 1959 for synthesis of polyribonucleotide?
Mendel
Calvin
Khurana
Ochoa
Which of the following is not a stop codon ?
UAA
UAG
AUG
UGA
Which of the following is NOT a characteristic of the genetic code?
Universal
Degenerate
Non-ambiguous
Overlapping
The initiator codon is
AUG
UAG
UAA
UGA
Certain mutations in tRNA can suppress nonsense mutations in mRNA. This phenomenon is MOST directly related to alterations in which part of the tRNA?
Acceptor stem
D-loop
T\u03a8C loop
Anticodon loop
What is not true for genetic code?
A codon in mRNA is read in a non โ contiguous fashion
It is nearly universal
It is Degenerate
It is unambiguous
