Deletion Mutation

Q. Point mutation may occur due to

1. alteration in DNA sequence
2. change in a single base pair of DNA
3. deletion of a segment of DNA
4. gain of a segment in DNA

Q. Which of the following statements is/are incorrect?
I. Six codons do not code for any amino acid.
II. A codon is read in mRNA in a contiguous fashion.
III. Three codons function as stop codons.
IV. The initiator codon AUG codes for methionine.

1. I, II and IV
2. I, II and III
3. II, III and IV
4. I

Q. If there are 999 bases in an RNA that codes for a protein with 333 amino acids and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered ?

1. 1
2. 11
3. 33
4. 333

Q. If there are 333 bases in an RNA that codes for a protein with 111 amino acids, and the base at position 301 is deleted such that the length of the RNA becomes 332 bases, how many codons will be altered?

1. 1
2. 11
3. 33
4. 333

Q. Wobble position means

1. Base paring
2. altered base on code
3. third altered base on codon
4. none of the above

Q. Which of the statements given below is correct with respect to frameshift mutation

1. a single nucleotide base change, insertion or deletion of the genetic material
2. Glutamine is replaced by valine
3. Insertions or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.
4. Sickle cell anemia is an example

Q. Frameshift mutation occurs when

1. Base is added
2. Base is deleted
3. Base is added or deleted
4. None of the above

Q.

If there are 999 bases in an RNA that code for a protein with 333 amino acids, and the base at position 901 is deleted such that the coding length of the RNA becomes 998 bases, how many codons will be altered?

1. 11
2. 33
3. 333
4. 1

Q.

What is a codon sequence?

Q. In order to become mature mRNA, hnRNA undergoes
(A) 5’ capping
(B) 3’ polyadenylation
(C) Splicing
(D) Three-dimensional folding

Choose the correct option

1. A, B, C
2. A, C, D
3. A, B, D
4. All of the above

Q. If there are 999 bases in a RNA that codes for the protein 333 amino acid , and the base at position 901 is deleted such that the length of the RNA become 998 bases, how many codes will be altered ? a)1 b)11 c)33 d)333

Q. what type of mutation is it when a stop codon is changed into a meaningful codon

Q. Choose the correct answer from the alternatives given :
An organism uses 20 amino acids while its DNA is made up of 6 types of nitrogenous bases. What would be the minimum size of a codon?

1. 6
2. 4
3. 2
4. 3

Q. Deletion mutation can also cause frameshift mutation.

1. True
2. False

Q. A frameshift mutation could result from

1. A base insertion only.
2. Either an insertion or a deletion of a base.
3. A base deletion only.
4. A base substitution only.

Q. What is amino acid

Q.

Genetic mutation occurs in

1. RNA
2. DNA
3. Chromosome
4. All of the above

Q. Thalassemia is an example of

1. Point mutation
2. Frame shift mutation
3. Translocation and Transition
4. Transversion

Q. If there are 999 bases in an RNA that codes for a protein with 333 amino acids and the base at position 901 is deleted such that the length of the RNA becomes 998 bases, how many codons will be altered?

1. 1
2. 11
3. 33
4. 333

Q. The amino acid coded by 3 codons is:-
A) Proline
B) Isoleucine
C) Tryptophan
D) Serine

Q. A mutation at a gene locus changes a character due to change in

1. RNA transcription pattern
2. Protein synthesis pattern
3. Protein structure
4. DNA replication

Q. Deletion mutation can also cause frameshift mutation.

1. True
2. False

Q. A hypothetical mRNA, AUG CGC CUA AAG AGG codes for five amino acids. What will happen if you delete the first C? Will five amino acids still be coded for? Give reasons.

Q.

EXCEPT AUG ANY OTHER CODON HAS DUAL FUNCTION ?

Q. what is point mutation?

Q. Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid?

1. UUA, UCA -Leucine
2. GUU, GCU -Alanine
3. UAG, UGA - Stop
4. AUG, ACG - Start / Methionine

Q. Genomic mutation is the term used for change in chromosomal number. Writebits two types and mention where they are seen ?

Q. A mutated DNA sequence synthesizes the same protein, as the nonmutated sequence do. This is an example of

1. Deletion
2. Insertion
3. Missense mutation
4. Nonsense mutation
5. Silent mutation

Q.

Difference between codon and anticodon.

Q. Which of the following is not a type of chromosome mutation?

1. Duplication
2. Inversion
3. Deletion
4. Frame shift