7.014 Problem Set 3
... i. Double stranded DNA where both strands are labeled ii. Double stranded DNA where one strand is labeled iii. Double stranded DNA where neither strand is labled Semi-conservative replication was only one of the models of DNA replication proposed after the discovery of DNA structure. One of the ot ...
... i. Double stranded DNA where both strands are labeled ii. Double stranded DNA where one strand is labeled iii. Double stranded DNA where neither strand is labled Semi-conservative replication was only one of the models of DNA replication proposed after the discovery of DNA structure. One of the ot ...
26. Replication
... Replication of DNA (template copy mechanism) (fig. 16 - 9 & ppt. 10): • semiconservative replication (figs. 16 –10 & ppt. 11); 14N15N DNA study (Meselson & Stahl) (fig. 16 – 11 & ppt. 12) • mechanisms: replication origins - base sequences recognized by enzymes which open double strand replication b ...
... Replication of DNA (template copy mechanism) (fig. 16 - 9 & ppt. 10): • semiconservative replication (figs. 16 –10 & ppt. 11); 14N15N DNA study (Meselson & Stahl) (fig. 16 – 11 & ppt. 12) • mechanisms: replication origins - base sequences recognized by enzymes which open double strand replication b ...
DNA
... • ribose instead of deoxyribose • uracil instead of thymine • single strand instead of double strand. The single strand forms double strand areas by twisting upon itself using the same rules of base complementarity (A complementary to U and G complementary to C) • RNA is transcribed off DNA and func ...
... • ribose instead of deoxyribose • uracil instead of thymine • single strand instead of double strand. The single strand forms double strand areas by twisting upon itself using the same rules of base complementarity (A complementary to U and G complementary to C) • RNA is transcribed off DNA and func ...
The Fourth Macromolecule!!!
... Show how the free nucleotides in the nucleus pair up with their complementary base on each template strand of DNA ...
... Show how the free nucleotides in the nucleus pair up with their complementary base on each template strand of DNA ...
Problem Set 3 – KEY
... c. After the second round of replication, under the semiconservative model, half of the DNA molecules will be entirely new DNA. d. The semiconservative model suggests that pieces of the old DNA double heli ...
... c. After the second round of replication, under the semiconservative model, half of the DNA molecules will be entirely new DNA. d. The semiconservative model suggests that pieces of the old DNA double heli ...
Ch. 12 DNA Replication and Recombination
... Replication are similar but there are some differences; these include… ...
... Replication are similar but there are some differences; these include… ...
simulating protein synthesis
... In this activity you will gain some basic knowledge of DNA, RNA, and protein synthesis. While doing these processes, you will simulate the role of DNA polymerase, RNA polymerase, and a ribosome. Procedure Overview On page 2 you will see a strand of DNA called the coding strand. It will have the base ...
... In this activity you will gain some basic knowledge of DNA, RNA, and protein synthesis. While doing these processes, you will simulate the role of DNA polymerase, RNA polymerase, and a ribosome. Procedure Overview On page 2 you will see a strand of DNA called the coding strand. It will have the base ...
DNA`s Discovery and Structure
... The Leading Strand is synthesized as a single strand from the point of origin toward the opening ...
... The Leading Strand is synthesized as a single strand from the point of origin toward the opening ...
Molecular Genetics - Ursuline High School
... will need to perform its life functions. As a result of Replication, the Mother cell copies its DNA and gives an exact copy to each resulting Daughter cell. This ensures that the Daughter cells will have the genetic information (DNA) they need to survive. ...
... will need to perform its life functions. As a result of Replication, the Mother cell copies its DNA and gives an exact copy to each resulting Daughter cell. This ensures that the Daughter cells will have the genetic information (DNA) they need to survive. ...
HLA typing of renal patients and investigation of disease
... which separates the DNA according to its molecular size. The contents of the plates are loaded into wells in an agarose gel, which provides a solid but porous matrix. The samples are held to the bottom of the well by the glycerol in the PCR mixture. The negatively charged DNA moves through the gel t ...
... which separates the DNA according to its molecular size. The contents of the plates are loaded into wells in an agarose gel, which provides a solid but porous matrix. The samples are held to the bottom of the well by the glycerol in the PCR mixture. The negatively charged DNA moves through the gel t ...
Ponce de Leon and the Telomere of Youth
... all cells have chromosomes, telomere length has been viewed as the general calibrator of longevity, and telomere loss is associated with a number of age-related diseases. But if this is a true story it is a complicated one, because mice have longer telomeres (20 –50 kb) but shorter lives (2–3 yrs) t ...
... all cells have chromosomes, telomere length has been viewed as the general calibrator of longevity, and telomere loss is associated with a number of age-related diseases. But if this is a true story it is a complicated one, because mice have longer telomeres (20 –50 kb) but shorter lives (2–3 yrs) t ...
DNA and Chromosomes
... • Chromosome: single long DNA contains a linear array of many genes. • Human genome contains 2.3x109 DNA nucleotide pairs, with 22 different autosomes and 2 sex chromosomes. • Chromosomal DNA: replication origins, telomeres, centromeres • Histones form the protein core for DNA wrapping • Nucleosome: ...
... • Chromosome: single long DNA contains a linear array of many genes. • Human genome contains 2.3x109 DNA nucleotide pairs, with 22 different autosomes and 2 sex chromosomes. • Chromosomal DNA: replication origins, telomeres, centromeres • Histones form the protein core for DNA wrapping • Nucleosome: ...
DNA and Chromosomes
... • Chromosome: single long DNA contains a linear array of many genes. • Human genome contains 2.3x109 DNA nucleotide pairs, with 22 different autosomes and 2 sex chromosomes. • Chromosomal DNA: replication origins, telomeres, centromeres • Histones form the protein core for DNA wrapping • Nucleosome: ...
... • Chromosome: single long DNA contains a linear array of many genes. • Human genome contains 2.3x109 DNA nucleotide pairs, with 22 different autosomes and 2 sex chromosomes. • Chromosomal DNA: replication origins, telomeres, centromeres • Histones form the protein core for DNA wrapping • Nucleosome: ...
Biology 50 - BrainMass
... A. How many different chromosomes (i.e. carrying different genes) does the rat have? B. How many molecules of DNA are in the nucleus of a somatic rat cell in G1? C. How many telomeres are in the nucleus of a somatic rat cell in G1? D. How many molecules of DNA are in the nucleus of a somatic rat cel ...
... A. How many different chromosomes (i.e. carrying different genes) does the rat have? B. How many molecules of DNA are in the nucleus of a somatic rat cell in G1? C. How many telomeres are in the nucleus of a somatic rat cell in G1? D. How many molecules of DNA are in the nucleus of a somatic rat cel ...
Document
... normally halts the cell cycle until all chromosomes have been properly replicated. • Damaged or defective p53 genes cause the cells to lose the information needed to respond to signals that would normally control growth. ...
... normally halts the cell cycle until all chromosomes have been properly replicated. • Damaged or defective p53 genes cause the cells to lose the information needed to respond to signals that would normally control growth. ...
4.1 DNA History - Lincoln County Schools
... A. They worked with the T2 Bacteriophage (a virus that infects bacteria) and E. Coli bacteria. B. Over time, this becomes known as the Hershey-Chase Experiment. 1. They used radioactive Sulfur 35 to label the virus’s protein outer capsid in one container. 2. They then used radioactive Phosphorus 32 ...
... A. They worked with the T2 Bacteriophage (a virus that infects bacteria) and E. Coli bacteria. B. Over time, this becomes known as the Hershey-Chase Experiment. 1. They used radioactive Sulfur 35 to label the virus’s protein outer capsid in one container. 2. They then used radioactive Phosphorus 32 ...
P.324doc
... competitive advantage; in fact, mutations are a major cause of evolution because they allow organisms to physically adapt to the changing environment in which they live. 16. The seven stages, which break down the events of DNA replication, are listed below: 1) The enzyme gyrase relieves any tension ...
... competitive advantage; in fact, mutations are a major cause of evolution because they allow organisms to physically adapt to the changing environment in which they live. 16. The seven stages, which break down the events of DNA replication, are listed below: 1) The enzyme gyrase relieves any tension ...
dna replication
... End of the Line Issues Presence of RNA primer on the 5’ ends of daughter DNA leading strand leaves a gap of uncopied DNA Repeated rounds of replication produce shorter and shorter DNA molecules (possible cause of aging?) Telomeres are enzymes found only in gamete producing cells that protect genes ...
... End of the Line Issues Presence of RNA primer on the 5’ ends of daughter DNA leading strand leaves a gap of uncopied DNA Repeated rounds of replication produce shorter and shorter DNA molecules (possible cause of aging?) Telomeres are enzymes found only in gamete producing cells that protect genes ...
The History of DNA
... • Allow infection • Wash viral particles (with blender!) • Check for label after subsequent infection into new bacteria • Found only P32 • Hence DNA is the transforming factor ...
... • Allow infection • Wash viral particles (with blender!) • Check for label after subsequent infection into new bacteria • Found only P32 • Hence DNA is the transforming factor ...
DNA (Deoxyribonucleic Acid)
... 1. Why is replication necessary? G---C So both new cells will have the correct C---G DNA T---A 2. When does replication occur? A---T During interphase (S phase). G---C 3. Describe how replication works. A---T Enzymes unzip DNA and complementary G---C nucleotides join each original strand. C---G 4. U ...
... 1. Why is replication necessary? G---C So both new cells will have the correct C---G DNA T---A 2. When does replication occur? A---T During interphase (S phase). G---C 3. Describe how replication works. A---T Enzymes unzip DNA and complementary G---C nucleotides join each original strand. C---G 4. U ...
Answers to Problem Set 3A
... Note that the enzymes (numbers) are placed in locations they are likely to be functioning with respect to the way the DNA molecules are presented (ie, the topology of the DNA). This is a simplified view. For example, you could have placed DNA polymerase III (the circled number 6) at either of the t ...
... Note that the enzymes (numbers) are placed in locations they are likely to be functioning with respect to the way the DNA molecules are presented (ie, the topology of the DNA). This is a simplified view. For example, you could have placed DNA polymerase III (the circled number 6) at either of the t ...
BPS 555
... The centromere consists of short repeated DNA sequences that are A-T-rich, known as a satellite DNA. The centromere is defined mainly by the assembly of proteins rather than by a specific DNA sequence ...
... The centromere consists of short repeated DNA sequences that are A-T-rich, known as a satellite DNA. The centromere is defined mainly by the assembly of proteins rather than by a specific DNA sequence ...
DNA Replication - Blue Valley Schools
... bonding of A with T and G with C. • This pattern is constant for all organisms. • The sequence of bases in a nucleotide strand is different from one species to the next. ...
... bonding of A with T and G with C. • This pattern is constant for all organisms. • The sequence of bases in a nucleotide strand is different from one species to the next. ...
Telomere
A telomere is a region of repetitive nucleotide sequences at each end of a chromatid, which protects the end of the chromosome from deterioration or from fusion with neighboring chromosomes. Its name is derived from the Greek nouns telos (τέλος) 'end' and merοs (μέρος, root: μερ-) 'part.' For vertebrates, the sequence of nucleotides in telomeres is TTAGGG. This sequence of TTAGGG is repeated approximately 2,500 times in humans. During chromosome replication, the enzymes that duplicate DNA cannot continue their duplication all the way to the end of a chromosome, so in each duplication the end of the chromosome is shortened (this is because the synthesis of Okazaki fragments requires RNA primers attaching ahead on the lagging strand). The telomeres are disposable buffers at the ends of chromosomes which are truncated during cell division; their presence protects the genes before them on the chromosome from being truncated instead.Over time, due to each cell division, the telomere ends become shorter. They are replenished by an enzyme, telomerase reverse transcriptase.