Is a gene the same as a DNA molecule?

Is a gene the same as a DNA molecule? 
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Answer :

Genes are the units of heredity. A gene is a segment or section of a DNA molecule. This segment of DNA provides a genetic code for the synthesis of proteins. The nucleic acid language of the gene is written as a sequence of bases on the DNA molecule. Such a sequence might read G- C- T- T- A- C- C- G- A- T- T. . . . This is the molecular “language” that will ultimately specify an amino acid sequence in a protein. 
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A Gene is (A) A single protein molecule (B) A group of chromosomes (C) An instruction for making a protein molecule (D) A bit of DNA molecule

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The DNA molecule to which the gene of interest is integrated for cloning is called (a) template (b) carrier (c) transformer (d) vector.

Description : The DNA molecule to which the gene of interest is integrated for cloning is called (a) template (b) carrier (c) transformer (d) vector.

Last Answer : (d) vector.

Cistron is a) The coding sequence of DNA b) The functional unit of DNA molecule that codes for a particular gene product c) Intervening non coding sequence of DNA d) The sequences which are removed during RNA splicing.

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Last Answer : b) The functional unit of DNA molecule that codes for a particular gene product c) Intervening non coding sequence of DNA

7. In a recombinant DNA technology a plasmid vector must be cleaved by a) the same enzyme that leaves the donor gene b) modified DNA ligase c) a heated alkaline solution d) four separate enzymes

Description : 7. In a recombinant DNA technology a plasmid vector must be cleaved by a) the same enzyme that leaves the donor gene b) modified DNA ligase c) a heated alkaline solution d) four separate enzymes

Last Answer : a) the same enzyme that leaves the donor gene

The eukaryotic nuclear chromosomal DNA (A) Is a linear and unbranched molecule (B) Is not associated with a specific membranous organelle (C) Is not replicated semiconservatively (D) Is about of the same size as each prokaryotic chromoses

Description : The eukaryotic nuclear chromosomal DNA (A) Is a linear and unbranched molecule (B) Is not associated with a specific membranous organelle (C) Is not replicated semiconservatively (D) Is about of the same size as each prokaryotic chromoses

Last Answer : Answer : A

Escherichia coli fully labelled with 15N is allowed to grow in 14N medium. The two strands of DNA molecule of the first generation bacteria have (a) different density and do not resemble parent DNA (b) different density but resemble parent DNA (c) same density and resemble parent DNA (d) same density but do not resemble parent DNA.

Description : Escherichia coli fully labelled with 15N is allowed to grow in 14N medium. The two strands of DNA molecule of the first generation bacteria have (a) different density and do not resemble parent DNA ( ... DNA (c) same density and resemble parent DNA (d) same density but do not resemble parent DNA.

Last Answer : (c) same density and resemble parent DNA

Escherichia coli fully labelled with 15N is allowed to grow in 14N medium. The two strands of DNA molecule of the first generation bacteria have (a) different density and do not resemble parent DNA (b) different density but resemble parent DNA (c) same density and resemble parent DNA (d) same density but do not resemble parent DNA.

Description : Escherichia coli fully labelled with 15N is allowed to grow in 14N medium. The two strands of DNA molecule of the first generation bacteria have (a) different density and do not resemble parent DNA ( ... DNA (c) same density and resemble parent DNA (d) same density but do not resemble parent DNA.

Last Answer : (a) different density and do not resemble parent DNA

Antiparallel strands of a DNA molecule means that (a) one strand turns clockwise (b) one strand turns anti-clockwise (c) the phosphate groups of two DNA strands, at their ends, share the same position (d) the phosphate groups at the start of two DNA strands are in opposite position (pole).

Description : Antiparallel strands of a DNA molecule means that (a) one strand turns clockwise (b) one strand turns anti-clockwise (c) the phosphate groups of two DNA strands, at their ends, share the same position (d) the phosphate groups at the start of two DNA strands are in opposite position (pole).

Last Answer : (d) the phosphate groups at the start of two DNA strands are in opposite position (pole).

Discuss with your teacher what does ‘a suitable gene’ means, in the context of DNA vaccines. -Science

Description : Discuss with your teacher what does ‘a suitable gene’ means, in the context of DNA vaccines. -Science

Last Answer : A DNA vaccine consists of a suitable gene encoding an antigenic protein, inserted into a plasmid, and then incorporated into the cells in a target animal. The plasmid vaccine carrying the DNA (gene ... on their surface, the immune system is alerted, which then triggers a range of immune responses.

How does a mutation in a gene affect the order of DNA based?

Description : How does a mutation in a gene affect the order of DNA based?

Last Answer : A mutation in a gene can happen by addition, deletion orsubstitution of base pairs. This means that the order of the baseswill change- a new base may be added, a base may be lost, or onebase ... occurs in a sex cell, themutation can be passed on to an offspring and affect theoffspring's phenotype.

What is manipulating the arrangement of DNA that makes up a gene?

Description : What is manipulating the arrangement of DNA that makes up a gene?

Last Answer : Genetic engineering

What property of DNA makes hybridization between a labeled probe and a target gene possible?

Description : What property of DNA makes hybridization between a labeled probe and a target gene possible?

Last Answer : Containing many nucleotides

What is manipulating the arrangement of DNA that makes up a gene?

Description : What is manipulating the arrangement of DNA that makes up a gene?

Last Answer : Genetic engineering

For production of eukaryotic protein by recombinant DNA technology in bacteria, the template used is (A) Eukaryotic gene (B) hnRNA (C) mRNA (D) All of these

Description : For production of eukaryotic protein by recombinant DNA technology in bacteria, the template used is (A) Eukaryotic gene (B) hnRNA (C) mRNA (D) All of these

Last Answer : Answer : C

The smallest unit of DNA capable of coding for the synthesis of a polypeptide is (A) Operon (B) Repressor gene (C) Cistron (D) Replicon

Description : The smallest unit of DNA capable of coding for the synthesis of a polypeptide is (A) Operon (B) Repressor gene (C) Cistron (D) Replicon

Last Answer : Answer : C

Which one of the following statements concerning glucose-6-phosphate dehydrogenase deficiency is correct? (A) Young R.B.Cs, particularly reticulocytes, contain the highest enzyme activity cells show less enzyme activity (B) Glucose-6-P Dehydroglucose deficiency leads to disfuction of many tissues (C) G-6-p Dehydroglucose deficiency is due to a single deletion of a large sequence of DNA in the G-6-PD gene (D) G-6-PD deficiency is precipitated by ingestion of drugs such as aspirin

Description : Which one of the following statements concerning glucose-6-phosphate dehydrogenase deficiency is correct? (A) Young R.B.Cs, particularly reticulocytes, contain the highest enzyme activity cells show less enzyme ... PD gene (D) G-6-PD deficiency is precipitated by ingestion of drugs such as aspirin

Last Answer : Answer : A

An important step in protein synthesis is transcription. Which of the following statement(s) is/are true concerning this process? a. The first step in gene transcription involves separating the double helix of DNA by an enzyme known as DNA polymerase b. The initial product of DNA transcription is called heterogeneous nuclear RNA which codes directly for proteins c. After processing is complete, the mRNA is exported from the nucleus to the cytoplasm d. Only one protein can be produced from an initial mRNA strand

Description : An important step in protein synthesis is transcription. Which of the following statement(s) is/are true concerning this process? a. The first step in gene transcription involves separating the double helix ... nucleus to the cytoplasm d. Only one protein can be produced from an initial mRNA strand

Last Answer : Answer: c Transcription of a gene begins at an initiation site associated with a specific DNA sequence, termed a promoter region. After binding to DNA, the RNA polymerase opens up a short ... different proteins from the same gene. mRNA is exported from the nucleus only after processing is complete

Gene is (a) A segment of DNA or functional RNA (b) A segment of DNA and histone (c) A segment of DNA, RNA and histone (d) All of the above

Description : Gene is (a) A segment of DNA or functional RNA (b) A segment of DNA and histone (c) A segment of DNA, RNA and histone (d) All of the above

Last Answer : Ans:(a)

What is antisense technology? (a) When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene (b) RNA polymerase producing DNA (c) A cell displaying a foreign antigen used for synthesis of antigens (d) Production of somaclonal variants in tissue cultures

Description : What is antisense technology? (a) When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene (b) RNA polymerase producing DNA (c) A cell displaying a foreign antigen used for synthesis of antigens (d) Production of somaclonal variants in tissue cultures

Last Answer : (a) When a piece of RNA that is complementary in sequence is used to stop expression of a specific gene