DNA extraction lab
... 4.Gently run a teaspoonful of ice-cold ethanol into the tube. Methanol or rubbing alcohol isopropanol - should also work; make sure they are ice cold by placing the bottle in the freezer for a few hours before the experiment. Watch the point where the two layers meet. You may see strands of DNA form ...
... 4.Gently run a teaspoonful of ice-cold ethanol into the tube. Methanol or rubbing alcohol isopropanol - should also work; make sure they are ice cold by placing the bottle in the freezer for a few hours before the experiment. Watch the point where the two layers meet. You may see strands of DNA form ...
Lesson 2 * Carbohydrates
... replicated as the molecule unzips but the other strand (the 3’ to 5’ side, called the lagging strand) needs to be replicated in sections then joined together later by an enzyme called DNA ligase. ...
... replicated as the molecule unzips but the other strand (the 3’ to 5’ side, called the lagging strand) needs to be replicated in sections then joined together later by an enzyme called DNA ligase. ...
Name: Date: Period: ______ Must
... 2) What conclusions did Hershey and Chase draw from the results of their experiment (shown to the right)? Which molecule was injected from the virus into the bacteria (i.e. the genetic material of the virus), and how did they know? ...
... 2) What conclusions did Hershey and Chase draw from the results of their experiment (shown to the right)? Which molecule was injected from the virus into the bacteria (i.e. the genetic material of the virus), and how did they know? ...
DNA - The Double Helix - Ms. Robbins` PNHS Science Classes
... protein which in turn codes for a trait. It is commonly referred to as the gene for baldness or the gene for blue eyes. In 1953, James Watson and Francis Crick established the structure of DNA. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of al ...
... protein which in turn codes for a trait. It is commonly referred to as the gene for baldness or the gene for blue eyes. In 1953, James Watson and Francis Crick established the structure of DNA. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of al ...
DNA Structure _ ReplicatonNC
... 1. What structure carries genetic information from generation to generation? 2. Which organelle is this structure located in? 3. How long do you think it has taken to discover DNA and its structure? Do you think one person is responsible for the discovery? ...
... 1. What structure carries genetic information from generation to generation? 2. Which organelle is this structure located in? 3. How long do you think it has taken to discover DNA and its structure? Do you think one person is responsible for the discovery? ...
Edible DNA Strand
... double helix from toothpicks, gummy bears, and licorice chains. Students will demonstrate an understanding of base-pairing and the double helix. Meets TN State Standards: 0707.4.4 Investigate the relationships among DNA, genes, and chromosomes. Pre-lesson: Teachers should walk students through the D ...
... double helix from toothpicks, gummy bears, and licorice chains. Students will demonstrate an understanding of base-pairing and the double helix. Meets TN State Standards: 0707.4.4 Investigate the relationships among DNA, genes, and chromosomes. Pre-lesson: Teachers should walk students through the D ...
Do these pgs. 97 - 100 wks.
... • Homologous pairs of chromosomes contain the same genes. The alleles for each gene may be the same or they may be different. ...
... • Homologous pairs of chromosomes contain the same genes. The alleles for each gene may be the same or they may be different. ...
Problem Set 2B
... What did he do to ensure that the bacteria which originally had the characteristic weren’t merely passed through the critical experiment? ...
... What did he do to ensure that the bacteria which originally had the characteristic weren’t merely passed through the critical experiment? ...
Nucleic acid chemistry lecture 2
... 1% DNA is found in the mitochondria •It forms the main substance of chromosomal material (the chromatin) The chromosomal DNA forms the genes which are the carriers of genetic information ...
... 1% DNA is found in the mitochondria •It forms the main substance of chromosomal material (the chromatin) The chromosomal DNA forms the genes which are the carriers of genetic information ...
DNA structure
... Phage viruses only have protein & DNA; tested to see which is injected into host Concludes DNA is the genetic material. ...
... Phage viruses only have protein & DNA; tested to see which is injected into host Concludes DNA is the genetic material. ...
Nucleotide HW Key
... into small space. 7. Does all DNA code for protein? If not, what else does it do? much does not, much of it is regulatory or structural ...
... into small space. 7. Does all DNA code for protein? If not, what else does it do? much does not, much of it is regulatory or structural ...
DNA and RNA
... DNA must be replicated as a cell undergoes cell division (mitosis or meiosis) to produce new cells. This ensures that the newly produced cells also have the same copy of DNA that was in the original cell before it underwent cell division. During DNA replication, the DNA molecule must uncoil and then ...
... DNA must be replicated as a cell undergoes cell division (mitosis or meiosis) to produce new cells. This ensures that the newly produced cells also have the same copy of DNA that was in the original cell before it underwent cell division. During DNA replication, the DNA molecule must uncoil and then ...
NOTES Ch. 12 DNA
... Exons – (expressed) – regions on DNA that contain information Introns - (intervening) – regions on DNA that do not code ...
... Exons – (expressed) – regions on DNA that contain information Introns - (intervening) – regions on DNA that do not code ...
Section 6.2 Questions, page 279 1. If Hershey and Chase had found
... 4. The complementary strand for GTGACTAACAGTGGCCAT is CACTGATTGTCACCGGTA. 5. 1928: Griffith described transformation in bacteria. 1944: Avery, McLeod, and McCarty identified DNA as the most probable molecule of heredity. 1950: Chargaff discovered that bases always occurred in definite ratios, A:T an ...
... 4. The complementary strand for GTGACTAACAGTGGCCAT is CACTGATTGTCACCGGTA. 5. 1928: Griffith described transformation in bacteria. 1944: Avery, McLeod, and McCarty identified DNA as the most probable molecule of heredity. 1950: Chargaff discovered that bases always occurred in definite ratios, A:T an ...
Created with Sketch. Student activity
... 1. Decide in your group which lollies will be the bases (remember there are four sorts of these), the phosphate groups and the sugar. 2. Use the toothpicks and florist wire as bonds to hold parts together, just like in the real DNA molecule. A DNA molecule has two strands – how will you join the str ...
... 1. Decide in your group which lollies will be the bases (remember there are four sorts of these), the phosphate groups and the sugar. 2. Use the toothpicks and florist wire as bonds to hold parts together, just like in the real DNA molecule. A DNA molecule has two strands – how will you join the str ...
File - High School Biology
... 12. The double coiled, “staircase” shape of DNA is called a __________________. Replication. 13. The process of __________________ produces a new copy of an organism’s genetic information, which is passed on to a new cell. 14. Create a matching (complementary) DNA sequence for the following strand: ...
... 12. The double coiled, “staircase” shape of DNA is called a __________________. Replication. 13. The process of __________________ produces a new copy of an organism’s genetic information, which is passed on to a new cell. 14. Create a matching (complementary) DNA sequence for the following strand: ...
Critical Thinking Chapter 13
... An analogy is a relationship between two pairs of terms or phrases written as a : b :: c : d. The symbol : is read as “is to,” and the symbol :: is read as “as.” In the space provided, write the letter of the pair of terms or phrases that best completes the analogy shown. ...
... An analogy is a relationship between two pairs of terms or phrases written as a : b :: c : d. The symbol : is read as “is to,” and the symbol :: is read as “as.” In the space provided, write the letter of the pair of terms or phrases that best completes the analogy shown. ...
Cell Structure and Function
... mathematically related to the distance between them • The further apart 2 genes are the higher the probability of a crossing over event separating them • Recombination frequencies vary between 0% and 50% • This method is useful for establishing gene maps (location of genes on a chromosome • Example: ...
... mathematically related to the distance between them • The further apart 2 genes are the higher the probability of a crossing over event separating them • Recombination frequencies vary between 0% and 50% • This method is useful for establishing gene maps (location of genes on a chromosome • Example: ...
1. Enzyme responsible for the unwinding and "unzipping" of DNA
... 8. The five-carbon sugar found in DNA and to which nitrogen bases attach. 9. The stage of the cell cycle in which DNA replication takes place. 10. The model which states that parental strands of DNA serve as a blueprint for the new, complementary strands. 11. Scientist whose pictures helped to deter ...
... 8. The five-carbon sugar found in DNA and to which nitrogen bases attach. 9. The stage of the cell cycle in which DNA replication takes place. 10. The model which states that parental strands of DNA serve as a blueprint for the new, complementary strands. 11. Scientist whose pictures helped to deter ...
Exercise Follow up and Conclusion for: DNA Fingerprinting and Big
... Read over the handout on ESTIMATING SIZES OF DNA BANDS BY SEMI-LOG PLOT (Science Education Partnership. Pay careful attention to pages 1, 2 and 4. ...
... Read over the handout on ESTIMATING SIZES OF DNA BANDS BY SEMI-LOG PLOT (Science Education Partnership. Pay careful attention to pages 1, 2 and 4. ...
Ch6.1 - Cobb Learning
... 22. The pairing of bases allows the cell to ______________________, or make copies of DNA. 6. Complement of base in question 5: 23. Both sides of a DNA molecule are ______________________, binding only with their match. ...
... 22. The pairing of bases allows the cell to ______________________, or make copies of DNA. 6. Complement of base in question 5: 23. Both sides of a DNA molecule are ______________________, binding only with their match. ...
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.