Worksheet on DNA and RNA
... d. None of the above 19. What are the sides of the DNA ladder made of? a. Nitrogenous bases b. Phosphates and sugars c. Nitrogenous bases and sugars d. Phosphates and nitrogenous bases 20. What is a gene? a. A sequence of DNA that codes for amino acids and determines a trait b. a protein c. an enzym ...
... d. None of the above 19. What are the sides of the DNA ladder made of? a. Nitrogenous bases b. Phosphates and sugars c. Nitrogenous bases and sugars d. Phosphates and nitrogenous bases 20. What is a gene? a. A sequence of DNA that codes for amino acids and determines a trait b. a protein c. an enzym ...
The Discovery of DNA
... varies from species to species all 4 bases not in equal quantity bases present in characteristic ratio ○ humans: A = 30.9% T = 29.4% G = 19.9% C = 19.8% ...
... varies from species to species all 4 bases not in equal quantity bases present in characteristic ratio ○ humans: A = 30.9% T = 29.4% G = 19.9% C = 19.8% ...
ANSWERS- The History of DNA
... ANSWERS- The History of DNA 1869 - Friedrich Miescher(Swiss) -first isolated the material in the nucleus that had an acid nature. He called it nucleic acid. 1920's – P.A. Levene - determined that nucleic acid contained a deoxyribose sugar, a phosphate group, and 4 nitrogenous bases. He didn’t know t ...
... ANSWERS- The History of DNA 1869 - Friedrich Miescher(Swiss) -first isolated the material in the nucleus that had an acid nature. He called it nucleic acid. 1920's – P.A. Levene - determined that nucleic acid contained a deoxyribose sugar, a phosphate group, and 4 nitrogenous bases. He didn’t know t ...
File
... 5. The sides of a DNA molecule are made up of alternating _____________ and ___________ molecules while the steps or rungs of the ladder are made of _____________ ________________. ...
... 5. The sides of a DNA molecule are made up of alternating _____________ and ___________ molecules while the steps or rungs of the ladder are made of _____________ ________________. ...
DNA Replication
... • Griffith – studied the bacteria that causes pneumonia in mice; this disease-causing factor could be passed between two strains of bacteria • Avery – using the same type of cells as Griffith, broke the strains down to the component macromolecules to determine nucleic acids (DNA) were responsible fo ...
... • Griffith – studied the bacteria that causes pneumonia in mice; this disease-causing factor could be passed between two strains of bacteria • Avery – using the same type of cells as Griffith, broke the strains down to the component macromolecules to determine nucleic acids (DNA) were responsible fo ...
Nucleic Acid/Protein Synthesis Review Questions
... X-RAY DIFFRACTION Rosalind Franklin used this technique to help discover the shape of DNA. WILKINS Name Rosalind Franklin’s partner at the university. WATSON AND CRICK Name the two scientists most often given credit for the discovery of the double helix. COMPLIMENTARY Adenine always bonds to thymine ...
... X-RAY DIFFRACTION Rosalind Franklin used this technique to help discover the shape of DNA. WILKINS Name Rosalind Franklin’s partner at the university. WATSON AND CRICK Name the two scientists most often given credit for the discovery of the double helix. COMPLIMENTARY Adenine always bonds to thymine ...
DNA
... following the rules for base-pairing. Add three nucleotides to each side. 4. Make a drawing of your DNA molecules. If you were to complete all the nucleotide pairings, would the two new strands of DNA be exact copies of the one original strand? ...
... following the rules for base-pairing. Add three nucleotides to each side. 4. Make a drawing of your DNA molecules. If you were to complete all the nucleotide pairings, would the two new strands of DNA be exact copies of the one original strand? ...
DNA Structure and Replication Constructed Response
... A DNA molecule has the shape of a double helix, or that of a twisted ladder. Each strand of the helix is a chain of nucleotides. The two strands are held together by hydrogen bonds between the nitrogenous bases of the nucleotides on opposite strands. The nitrogenous bases form hydrogen bonds with on ...
... A DNA molecule has the shape of a double helix, or that of a twisted ladder. Each strand of the helix is a chain of nucleotides. The two strands are held together by hydrogen bonds between the nitrogenous bases of the nucleotides on opposite strands. The nitrogenous bases form hydrogen bonds with on ...
How does it all work
... amino acids. But…how are the instructions moved to a cell or other parts of the body? ...
... amino acids. But…how are the instructions moved to a cell or other parts of the body? ...
Chromosomes - life.illinois.edu
... How can chromosomes break? Ionizing radiation (production of free radicals, which act like little atomic "cannon balls", blasting through strands of DNA or c'somes. Chemical insult. ...
... How can chromosomes break? Ionizing radiation (production of free radicals, which act like little atomic "cannon balls", blasting through strands of DNA or c'somes. Chemical insult. ...
AP BIOLOGY MOLECULAR GENETICS QUESTIONS
... 2. Briefly describe how Watson and Crick came to the discovery of the double helix structure of DNA. ...
... 2. Briefly describe how Watson and Crick came to the discovery of the double helix structure of DNA. ...
Lecture 10: Meiosis Products of meiosis in animals vs. plants, fungi
... o Homologues do not pair side-by-side; they overlap! - Women: recombination is done before they are done (as fetus) and cells sit in meiotic arrest o Once they are released monthly, they can complete meiosis if fertilized - Men: recombination is constantly being done Roles of cohesion and synaptonem ...
... o Homologues do not pair side-by-side; they overlap! - Women: recombination is done before they are done (as fetus) and cells sit in meiotic arrest o Once they are released monthly, they can complete meiosis if fertilized - Men: recombination is constantly being done Roles of cohesion and synaptonem ...
Releasing Natural Variation in Bread Wheat by Modulating
... • Creates linkage-drag so that separation of beneficial traits with detrimental traits is difficult • We have put together a team with expertise in wheat genomics and meiotic recombination to modulate the frequency and distribution of COs ...
... • Creates linkage-drag so that separation of beneficial traits with detrimental traits is difficult • We have put together a team with expertise in wheat genomics and meiotic recombination to modulate the frequency and distribution of COs ...
Conservative replication
... • There were three types of theories on DNA replication: semiconservative, conservative, and dispersive. • Meselson’s and Stahl’s experiment proved that DNA replication was semiconservative. • Conservative replication would leave the original DNA molecule together, yet create a new molecule. • Dispe ...
... • There were three types of theories on DNA replication: semiconservative, conservative, and dispersive. • Meselson’s and Stahl’s experiment proved that DNA replication was semiconservative. • Conservative replication would leave the original DNA molecule together, yet create a new molecule. • Dispe ...
Mitosis Review 2016
... 11. Which part of the nucleotide allows DNA to act as a code? _____________________ 12. Fill in the blanks: The _______________ of the nitrogen bases in DNA gives instructions to the ribosomes to ...
... 11. Which part of the nucleotide allows DNA to act as a code? _____________________ 12. Fill in the blanks: The _______________ of the nitrogen bases in DNA gives instructions to the ribosomes to ...
Replication
... •enzymes are used to add new base pairs to both strands •end result = two identical DNA molecules ...
... •enzymes are used to add new base pairs to both strands •end result = two identical DNA molecules ...
DNA - BEHS Science
... essential role in this discovery, either during her lifetime or after her untimely death at age 37 due to cancer. ...
... essential role in this discovery, either during her lifetime or after her untimely death at age 37 due to cancer. ...
GENETICS UNIT TEST
... Why did Griffith call the process he studied transformation? Because harmless bacteria transformed to harmful bacteria ...
... Why did Griffith call the process he studied transformation? Because harmless bacteria transformed to harmful bacteria ...
DNA - BEHS Science
... essential role in this discovery, either during her lifetime or after her untimely death at age 37 due to cancer. ...
... essential role in this discovery, either during her lifetime or after her untimely death at age 37 due to cancer. ...
Problem Set 1A
... from what they originally were. A person might see a loop-out of the chromosomes, but in this case (as opposed to the situation with deletions or duplications) both chromosomes would be involved in the loop. Thus all four chromatids would be involved in the loop. D. translocation: Movement of geneti ...
... from what they originally were. A person might see a loop-out of the chromosomes, but in this case (as opposed to the situation with deletions or duplications) both chromosomes would be involved in the loop. Thus all four chromatids would be involved in the loop. D. translocation: Movement of geneti ...
ekbdna-structure
... that "proofread" the nucleotides added into the new DNA strand. • With this system, a cell's DNA is copied with less than one mistake in a billion nucleotides. This is equal to a person copying 100 large (1000 page) dictionaries word for word, and symbol for symbol, with only one error for the whole ...
... that "proofread" the nucleotides added into the new DNA strand. • With this system, a cell's DNA is copied with less than one mistake in a billion nucleotides. This is equal to a person copying 100 large (1000 page) dictionaries word for word, and symbol for symbol, with only one error for the whole ...
Genetics Name: ____ Unit 4: Genetic Engineering Date: :_____
... 1. The macromolecule that cuts the DNA is called a __________________________________. 2. These enzymes cut the DNA, which creates different sized _______________________. 3. The restriction enzyme used above is called EcoRI. EcoRI cuts DNA everywhere the base pattern is _______________. 4. Another ...
... 1. The macromolecule that cuts the DNA is called a __________________________________. 2. These enzymes cut the DNA, which creates different sized _______________________. 3. The restriction enzyme used above is called EcoRI. EcoRI cuts DNA everywhere the base pattern is _______________. 4. Another ...
DNA Notes
... Nucleotides- the subunits of DNA. Each sub unit is made of a sugar and phosphate backbone and a nitrogen base, which attaches itself to a complimentary nitrogen base. Draw them from page 231 A-T G-C A (adenine) only bonds with T (thymine) G (guanine) only bonds with C (cytosine) Exercise: Finish thi ...
... Nucleotides- the subunits of DNA. Each sub unit is made of a sugar and phosphate backbone and a nitrogen base, which attaches itself to a complimentary nitrogen base. Draw them from page 231 A-T G-C A (adenine) only bonds with T (thymine) G (guanine) only bonds with C (cytosine) Exercise: Finish thi ...
DNA - World of Teaching
... DNA Structure DNA consists of two molecules that are arranged into a ladder-like structure called a Double Helix. A molecule of DNA is made up of millions of ...
... DNA Structure DNA consists of two molecules that are arranged into a ladder-like structure called a Double Helix. A molecule of DNA is made up of millions of ...
Homologous recombination
Homologous recombination is a type of genetic recombination in which nucleotide sequences are exchanged between two similar or identical molecules of DNA. It is most widely used by cells to accurately repair harmful breaks that occur on both strands of DNA, known as double-strand breaks. Homologous recombination also produces new combinations of DNA sequences during meiosis, the process by which eukaryotes make gamete cells, like sperm and egg cells in animals. These new combinations of DNA represent genetic variation in offspring, which in turn enables populations to adapt during the course of evolution. Homologous recombination is also used in horizontal gene transfer to exchange genetic material between different strains and species of bacteria and viruses.Although homologous recombination varies widely among different organisms and cell types, most forms involve the same basic steps. After a double-strand break occurs, sections of DNA around the 5' ends of the break are cut away in a process called resection. In the strand invasion step that follows, an overhanging 3' end of the broken DNA molecule then ""invades"" a similar or identical DNA molecule that is not broken. After strand invasion, the further sequence of events may follow either of two main pathways discussed below (see Models); the DSBR (double-strand break repair) pathway or the SDSA (synthesis-dependent strand annealing) pathway. Homologous recombination that occurs during DNA repair tends to result in non-crossover products, in effect restoring the damaged DNA molecule as it existed before the double-strand break.Homologous recombination is conserved across all three domains of life as well as viruses, suggesting that it is a nearly universal biological mechanism. The discovery of genes for homologous recombination in protists—a diverse group of eukaryotic microorganisms—has been interpreted as evidence that meiosis emerged early in the evolution of eukaryotes. Since their dysfunction has been strongly associated with increased susceptibility to several types of cancer, the proteins that facilitate homologous recombination are topics of active research. Homologous recombination is also used in gene targeting, a technique for introducing genetic changes into target organisms. For their development of this technique, Mario Capecchi, Martin Evans and Oliver Smithies were awarded the 2007 Nobel Prize for Physiology or Medicine.