Substitution of a base can result in a (A) Silent mutation (B) Mis-sense mutation (C) Nonsense mutation(D) All of these

Substitution of a base can result in a (A) Silent mutation (B) Mis-sense mutation (C) Nonsense mutation(D) All of these
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If the codon UAC on mRNA changes into UAG as a result of a base substitution in DNA, it will result in (A) Silent mutation (B) Acceptable mis-sense mutation (C) Nonsense mutation (D) Frameshift mutation

Description : If the codon UAC on mRNA changes into UAG as a result of a base substitution in DNA, it will result in (A) Silent mutation (B) Acceptable mis-sense mutation (C) Nonsense mutation (D) Frameshift mutation

Last Answer : Answer : C

A silent mutation is most likely to result from (A) Substitution of the first base of a codon (B) Substitution of the third base of a codon (C) Conversion of a nonsense codon into a sense codon (D) Conversion of a sense codon into a nonsense codon

Description : A silent mutation is most likely to result from (A) Substitution of the first base of a codon (B) Substitution of the third base of a codon (C) Conversion of a nonsense codon into a sense codon (D) Conversion of a sense codon into a nonsense codon

Last Answer : Answer : B

Haemoglobin S is an example of a/an (A) Silent mutation (B) Acceptable mis-sense mutation (C) Unacceptable mis-sense mutation (D) Partially acceptable mis-sense mutation

Description : Haemoglobin S is an example of a/an (A) Silent mutation (B) Acceptable mis-sense mutation (C) Unacceptable mis-sense mutation (D) Partially acceptable mis-sense mutation

Last Answer : Answer : D

Amino acid sequence of the encoded protein is not changed in (A) Silent mutation (B) Acceptable mis-sense mutation (C) Both (A) and (B) (D) None of these

Description : Amino acid sequence of the encoded protein is not changed in (A) Silent mutation (B) Acceptable mis-sense mutation (C) Both (A) and (B) (D) None of these

Last Answer : Answer : A

In the following partial sequence of mRNA, a mutation of the template DNA results in a change in codon 91 to UAA. The type of mutation is 88 89 90 91 92 93 94 GUC GAC CAG UAG GGC UAA CCG (A) Missene (B) Silent (C) Nonsense (D) Frame shit

Description : In the following partial sequence of mRNA, a mutation of the template DNA results in a change in codon 91 to UAA. The type of mutation is 88 89 90 91 92 93 94 GUC GAC CAG UAG GGC UAA CCG (A) Missene (B) Silent (C) Nonsense (D) Frame shit

Last Answer : Answer : B

The effect of a mis-sense mutation can be (A) Acceptable (B) Partially acceptable (C) Unacceptable (D) All of these

Description : The effect of a mis-sense mutation can be (A) Acceptable (B) Partially acceptable (C) Unacceptable (D) All of these

Last Answer : Answer : D

A point mutation results from (A) Substitution of a base (B) Insertion of a base (C) Deletion of a base (D) All of these

Description : A point mutation results from (A) Substitution of a base (B) Insertion of a base (C) Deletion of a base (D) All of these

Last Answer : Answer : A

Substitution of a thymine base by adenine in DNA is known as ((A) Transposition (B) Transition (C) Transversion (D) Frameshift mutation

Description : Substitution of a thymine base by adenine in DNA is known as ((A) Transposition (B) Transition (C) Transversion (D) Frameshift mutation

Last Answer : Answer : C

Substitution of an adenine base by guanine in DNA is known as (A) Transposition (B) Transition (C) Transversion (D) Frameshift mutation

Description : Substitution of an adenine base by guanine in DNA is known as (A) Transposition (B) Transition (C) Transversion (D) Frameshift mutation

Last Answer : Answer : B

.If the DNA codons are ATG ATG ATG and a cytosine base is inserted at the beginning, then which of the following will result? (a) CAT GAT GAT G (b) A non-sense mutation (c) C ATG ATG ATG (d) CA TGA TGA TG

Description : .If the DNA codons are ATG ATG ATG and a cytosine base is inserted at the beginning, then which of the following will result? (a) CAT GAT GAT G (b) A non-sense mutation (c) C ATG ATG ATG (d) CA TGA TGA TG

Last Answer : (a) CAT GAT GAT G

.If the DNA codons are ATG ATG ATG and a cytosine base is inserted at the beginning, then which of the following will result? (a) CAT GAT GAT G (b) A non-sense mutation (c) C ATG ATG ATG (d) CA TGA TGA TG

Description : .If the DNA codons are ATG ATG ATG and a cytosine base is inserted at the beginning, then which of the following will result? (a) CAT GAT GAT G (b) A non-sense mutation (c) C ATG ATG ATG (d) CA TGA TGA TG

Last Answer : (a) CAT GAT GAT G

Which enzyme will be produced in a cell if there is a nonsense mutation in the lac Y gene? (a) Transacetylase (b) Lactose permease and transacetylase (c) β-galactosidase (d) Lactose permease

Description : Which enzyme will be produced in a cell if there is a nonsense mutation in the lac Y gene? (a) Transacetylase (b) Lactose permease and transacetylase (c) β-galactosidase (d) Lactose permease

Last Answer : β-galactosidase

Which one of the following causes frame shift mutation? (A) Transition (B) Transversion (C) Deletion (D) Substitution of purine to pyrimidine

Description : Which one of the following causes frame shift mutation? (A) Transition (B) Transversion (C) Deletion (D) Substitution of purine to pyrimidine

Last Answer : Answer : C

The most likely lethal mutation is (A) Substitution of adenine for cytosine (B) Insertion of one nucleotide (C) Deletion of three nucleotides (D) Substitution of cytosine for guanine

Description : The most likely lethal mutation is (A) Substitution of adenine for cytosine (B) Insertion of one nucleotide (C) Deletion of three nucleotides (D) Substitution of cytosine for guanine

Last Answer : Answer : B

Which one of the following causes frame shift mutation? (A) Transition (B) Transversion (C) Deletion (D) Substitution of purine to pyrimidine

Description : Which one of the following causes frame shift mutation? (A) Transition (B) Transversion (C) Deletion (D) Substitution of purine to pyrimidine

Last Answer : Answer : C

Does nonsense have some sense or is it that some sense is nonsense?

Description : Does nonsense have some sense or is it that some sense is nonsense?

Last Answer : the secret is deciding what makes sense out of all non-sense, and acting on it.

.In the genetic dictionary, there are 64 codons as (a) 64 amino acids are to be coded (b) 64 types of tRNAs are present (c) there are 44 nonsense codons and 20 sense codons (d) genetic code is triplet.

Description : .In the genetic dictionary, there are 64 codons as (a) 64 amino acids are to be coded (b) 64 types of tRNAs are present (c) there are 44 nonsense codons and 20 sense codons (d) genetic code is triplet.

Last Answer : (c) there are 44 nonsense codons and 20 sense codons

In the genetic dictionary, there are 64 codons as (a) 64 amino acids are to be coded (b) 64 types of tRNAs are present (c) there are 44 nonsense codons and 20 sense codons (d) genetic code is triplet

Description : In the genetic dictionary, there are 64 codons as (a) 64 amino acids are to be coded (b) 64 types of tRNAs are present (c) there are 44 nonsense codons and 20 sense codons (d) genetic code is triplet

Last Answer : genetic code is triplet

Thalassemia is an example of – (1) Deletion mutation (2) Point mutation (3) Silent mutation (4) Frame shift mutation

Description : Thalassemia is an example of – (1) Deletion mutation (2) Point mutation (3) Silent mutation (4) Frame shift mutation

Last Answer : (4) Frame shift mutation Explanation: Frame shift mutations are associated with Thalassemia. They involve a deletion or insertion of one' or two base pairs within a coding sequence of a gene. As ... and deletions, the reading frame of mRNA is altered resulting in a nonsense sequence of amino acids.

Thalassemia is an example of (1) Deletion mutation (2) Point mutation (3) Silent mutation (4) Frame shift mutation

Description : Thalassemia is an example of (1) Deletion mutation (2) Point mutation (3) Silent mutation (4) Frame shift mutation

Last Answer : Frame shift mutation

Retinoblastoma can result from a mutation in (A) ras proto-oncogene (B) erbB proto-oncogene (C) p 53 gene (D) RB 1 gene

Description : Retinoblastoma can result from a mutation in (A) ras proto-oncogene (B) erbB proto-oncogene (C) p 53 gene (D) RB 1 gene

Last Answer : Answer : D

Which of the following statements concerning abnormalities of the haemoglobin molecule is true? 1) Alpha thalassaemia is due to a deficiency of beta-chain production 2) HbS is caused by a single base mutation on the beta-chain 3) genes for the alpha and beta chains are located on the same chromosome 4) in thalassaemia persistance of HbF is an adverse prognostic sign 5) oliguneoclitide probes may assist in the diagnosis of haemoglobinopathies

Description : Which of the following statements concerning abnormalities of the haemoglobin molecule is true? 1) Alpha thalassaemia is due to a deficiency of beta-chain production 2) HbS is caused by a ... is an adverse prognostic sign 5) oliguneoclitide probes may assist in the diagnosis of haemoglobinopathies

Last Answer : Answers-2 Alpha Thalassaemia is due to abnormalities of the alpha chain. Persistence of HbF has survival advnatages in severely affected subjects. C-alpha 16, beta 11. e-Hb electrophoresis(Dr Shu Ho)

Nonsense codons bring about (A) Amino acid activation (B) Initiation of protein synthesis (C) Termination of protein synthesis (D) Elongation of polypeptide chains

Description : Nonsense codons bring about (A) Amino acid activation (B) Initiation of protein synthesis (C) Termination of protein synthesis (D) Elongation of polypeptide chains

Last Answer : Answer : C

Non-coding sequences in a gene are known as (A) Cistrons (B) Nonsense codons (C) Introns (D) Exons

Description : Non-coding sequences in a gene are known as (A) Cistrons (B) Nonsense codons (C) Introns (D) Exons

Last Answer : Answer : C

All of the following statements about nonsense codons are true except (A) They do not code for amino acids (B) They act as chain termination signals (C) They are identical in nuclear and mitochondrial DNA (D) They have no complementary anticodons

Description : All of the following statements about nonsense codons are true except (A) They do not code for amino acids (B) They act as chain termination signals (C) They are identical in nuclear and mitochondrial DNA (D) They have no complementary anticodons

Last Answer : Answer : C

Nonsense codons are present on (A) mRNA (B) tRNA (C) rRNA (D) None of these

Description : Nonsense codons are present on (A) mRNA (B) tRNA (C) rRNA (D) None of these

Last Answer : Answer : A

The secondary sexual characters in females is effected by (A) Estrogens (B) Gluco corticoids (C) MIS (D) None of these

Description : The secondary sexual characters in females is effected by (A) Estrogens (B) Gluco corticoids (C) MIS (D) None of these

Last Answer : Answer : A

Vector transformation followed by coordinate point substitution and vice-versa, both given the same result. Choose the best answer. a) Possible, when the vector is constant b) Possible, when the vector is variable c) Possible in all cases d) Not possible

Description : Vector transformation followed by coordinate point substitution and vice-versa, both given the same result. Choose the best answer. a) Possible, when the vector is constant b) Possible, when the vector is variable c) Possible in all cases d) Not possible

Last Answer : a) Possible, when the vector is constant

Increase in price of a product reduces the purchasing power as a result of which demand for a product goes up. This effect is known as (a) Substitution effect ; (b) Income effect ; (c) Diminishing marginal utility concept (d)Law of diminishing returns

Description : Increase in price of a product reduces the purchasing power as a result of which demand for a product goes up. This effect is known as (a) Substitution effect ; (b) Income effect ; (c) Diminishing marginal utility concept (d)Law of diminishing returns

Last Answer : ; (b) Income effect ;

What is the Effect of substitution of base and codon?

Description : What is the Effect of substitution of base and codon?

Last Answer : A substitution is a mutation that exchanges one base for another. Such a substitution could: change a codon to one that encodes a different amino acid and cause a small change in the protein produced.

. Sickle-cell anaemia is (a) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin (b) caused by a change in a single base pair of DNA (c) characterized by elongated sickle like RBCs with a nucleus (d) an autosomal linked dominant trait.

Description : . Sickle-cell anaemia is (a) caused by substitution of valine by glutamic acid in the beta globin chain of haemoglobin (b) caused by a change in a single base pair of DNA (c) characterized by elongated sickle like RBCs with a nucleus (d) an autosomal linked dominant trait.

Last Answer : (b) caused by a change in a single base pair of DNA

What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the chain reaction. (b) It functions by destabilizing the carbocationic intermediate and thereby increases the rate of H+ loss. (c) It serves as a Lewis base catalyst by reacting with Cl2 to generate chloride ions. (d) It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

Description : What purpose does FeCl3 serve in the electrophilic aromatic substitution reaction between chlorine and benzene? (a) It serves as a radical initiator to produce the chlorine radical needed to propagate the ... by reacting with the Cl2 and thereby activates it toward attack by benzene's π electrons.

Last Answer : It serves as a Lewis acid catalyst by reacting with the Cl2 and thereby activates it toward attack by benzene’s π electrons.

Which one of the following could NOT cause a change in the mRNA ―reading frame‖? a. Insertion Sequence b. Base-Pair Substitution c. Base Addition d. Base Deletion

Description : Which one of the following could NOT cause a change in the mRNA ―reading frame‖? a. Insertion Sequence b. Base-Pair Substitution c. Base Addition d. Base Deletion

Last Answer : b. Base-Pair Substitution

When no signal is being received, the loudspeaker is not entirely silent as a result of the presence of A. parasitic oscillations in some of the receiver stages. B. negative feedback in each stage. C. spurious frequencies as a result of improper neutralization. D. internal receiver noise.

Description : When no signal is being received, the loudspeaker is not entirely silent as a result of the presence of A. parasitic oscillations in some of the receiver stages. B. negative feedback in each stage. C. spurious frequencies as a result of improper neutralization. D. internal receiver noise.

Last Answer : D. internal receiver noise.

Increasing skin cancer and high mutation rate are the result of

Description : Increasing skin cancer and high mutation rate are the result of

Last Answer : Increasing skin cancer and high mutation rate are the result of A. Acir rain B. Ozone depletion C. CO pollution D. `CO_(2)` pollution

Why does frameshift mutation result in a nonfunctional protein?

Description : Why does frameshift mutation result in a nonfunctional protein?

Last Answer : What is the answer ?

How may changes to genes that is mutation result in harmful beneficial or neutral effects to the organism?

Description : How may changes to genes that is mutation result in harmful beneficial or neutral effects to the organism?

Last Answer : Mutations are random changes so there is no way to predict what kind of effect they will have.

Nondisjunction of a chromosome results in which of the following diagnoses? a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two copies of a particular chromosome (nondisjunction) Down syndrome results from three number 21 chromosomes. b) Huntingon Disease Huntington disease is one example of a germ-line mutation. c) Duchenne Muscular Dystrophy Duchenne muscular dystrophy, an inherited form of muscular dystrophy, is an example of a genetic caused by structural gene mutations. d) Marphan Syndrome Marphan Syndrome is a genetic condition that may occur in a single family member as a result of spontaneous mutation.

Description : Nondisjunction of a chromosome results in which of the following diagnoses? a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two ... genetic condition that may occur in a single family member as a result of spontaneous mutation.

Last Answer : a) Down Syndrome When a pair of chromosomes fails to separate completely and creates a sperm or oocyte that contains two copies of a particular chromosome (nondisjunction) Down syndrome results from three number 21 chromosomes.

If a gene mutation prevents formation of an enzyme normally used by a lysosomes, a disease may result known as (A) Lysosomal abstracted disease (B) Lysosomal secretory disease (C) Lysosomal storage disease (D) All A, B and C

Description : If a gene mutation prevents formation of an enzyme normally used by a lysosomes, a disease may result known as (A) Lysosomal abstracted disease (B) Lysosomal secretory disease (C) Lysosomal storage disease (D) All A, B and C

Last Answer : (C) Lysosomal storage disease

What type of mutation remove a thymine base?

Description : What type of mutation remove a thymine base?

Last Answer : Need answer

A part of an mrna has the base sequence gca. which change to this sequence would indicate a missense mutation?

Description : A part of an mrna has the base sequence gca. which change to this sequence would indicate a missense mutation?

Last Answer : A missense mutation is the change in a single nucleotide that results in a different amino acid being coded for. GCA codes for the amino acid Alanine. Therefore any of the following changes would be missense ... acid GUA -> Valine GGA -> Glycine CCA -> Proline UCA -> Serine ACA -> Threonine

Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5′ _____ GAATTC _____ 3′ 3′ _____ CTTAAG _____ 5′ (a) Replication completed (b) Deletion mutation (c) Start codon at the 5′ end (d) Palindromic sequence of base pairs

Description : Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5′ _____ GAATTC _____ 3′ 3′ _____ CTTAAG _____ 5′ (a) ... completed (b) Deletion mutation (c) Start codon at the 5′ end (d) Palindromic sequence of base pairs

Last Answer : (d) Palindromic sequence of base pairs

Which of the statements give below is correct with respect to frameshift mutation a) a single nucleotide base change, insertion, or deletion of the genetic material b) Glutamine is replaced by valine c) Sickle cell anemia is an example d) insertions or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.

Description : Which of the statements give below is correct with respect to frameshift mutation a) a single nucleotide base change, insertion, or deletion of the genetic material b) Glutamine is replaced by valine c) ... or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.

Last Answer : d) insertions or deletions of a number of nucleotides in a DNA sequence that is not divisible by three.

One of the fault base testing techniques is (A) unit testing. (B) beta testing. (C) Stress testing. (D) mutation testing.

Description : One of the fault base testing techniques is (A) unit testing. (B) beta testing. (C) Stress testing. (D) mutation testing.

Last Answer : (D) mutation testing.

Halloween approacheth. Are we going to have another round of nonsense about clowns?

Description : Halloween approacheth. Are we going to have another round of nonsense about clowns?

Last Answer : I don’t understand why people are scared of clown. I find them funny and ridiculous. Not to dismiss anyone’s fear in any way though. No fear is wrong. I just don’t know what’s in the clown that scares people.

What supposedly deep and profound phrases sound like utter nonsense to you? Why?

Description : What supposedly deep and profound phrases sound like utter nonsense to you? Why?

Last Answer : My pet hated phrase is God won't give you anything you can't handle. What is it supposed to mean? That you can handle anything? That if there is something you can't handle, you can ... permanently, and leaves damage and scars, and that not everybody gets over everything that happens to them.

What songs contain what seem to be throw-away, nonsense lines?

Description : What songs contain what seem to be throw-away, nonsense lines?

Last Answer : answer:What if God was one of us Just a slob like one of us Just a stranger on the bus Trying to make His way home? tryin’ to make His way home Back up to Heaven all alone Nobody callin’ on the phone ‘Cept for the Pope, maybe, in Rome

What is the point of this nonsense that under no circumstances can we talk about other jellies by name?

Description : What is the point of this nonsense that under no circumstances can we talk about other jellies by name?

Last Answer : I miss people too. One quit ask-public and unfriended me.

What social custom do you think is nonsense that you're pleased to flaunt?

Description : What social custom do you think is nonsense that you're pleased to flaunt?

Last Answer : Being outspoken and not shy and demure, as females are still expected to be much of the time. Pffft! Bright, strong, funny women unite!

Ever have a day where you feel like calling people out on their nonsense?

Description : Ever have a day where you feel like calling people out on their nonsense?

Last Answer : answer:Oh yeah, I HATE drama more than just about anything. I’ve heard it’s healthy to express your feelings, so let ‘er rip mama! So where’s the drama, at home or here or ? Can we help?