unit iv - dna & cell division
... 5’ ends of daughter strands cannot be completed because DNA polymerase can only add nucleotides to the 3’ end Results in shorter and shorter DNA molecules with jagged ends To protect genetic integrity, ends of chromosomes do not contain genes – instead there are nucleotide sequences known as t ...
... 5’ ends of daughter strands cannot be completed because DNA polymerase can only add nucleotides to the 3’ end Results in shorter and shorter DNA molecules with jagged ends To protect genetic integrity, ends of chromosomes do not contain genes – instead there are nucleotide sequences known as t ...
1. What are the four nitrogenous bases found in DNA? 1. Where in
... 5. When converting DNA to RNA, there are rules about which bases pair together • Adenine pairs with Uracil A ---- U • Guanine pairs with Cytosine G ---- C • This means that an A on the DNA strand will result in or code for a U on the RNA strand. T’s in DNA get replaced by U’s in RNA! ...
... 5. When converting DNA to RNA, there are rules about which bases pair together • Adenine pairs with Uracil A ---- U • Guanine pairs with Cytosine G ---- C • This means that an A on the DNA strand will result in or code for a U on the RNA strand. T’s in DNA get replaced by U’s in RNA! ...
Bio1100Ch16W
... Answer- _______________________ a. ____________________ proofreads each new nucleotide against the template nucleotide as soon as it is added. If ...
... Answer- _______________________ a. ____________________ proofreads each new nucleotide against the template nucleotide as soon as it is added. If ...
RNA
... Transcription produces three general classes* of RNA, each of which plays a role in translation (protein synthesis) * actually, there are many more classes of small RNA molecules that perform important functions in the cell, including gene regulation and RNA splicing. ...
... Transcription produces three general classes* of RNA, each of which plays a role in translation (protein synthesis) * actually, there are many more classes of small RNA molecules that perform important functions in the cell, including gene regulation and RNA splicing. ...
DNA - hedrickbiology
... tightly coiled around ► Nucleosome: a beadlike structure formed by the DNA and histones. ...
... tightly coiled around ► Nucleosome: a beadlike structure formed by the DNA and histones. ...
DNA Replication
... template for replication. Replication is carried out in a medium containing only unlabeled nucleotides. After two rounds of replication, what percent of double stranded DNA molecules are radioactive? A) 25% B) 50% C) 75% D) 100% 2. Which of these statements is false? A) The primosome is part ...
... template for replication. Replication is carried out in a medium containing only unlabeled nucleotides. After two rounds of replication, what percent of double stranded DNA molecules are radioactive? A) 25% B) 50% C) 75% D) 100% 2. Which of these statements is false? A) The primosome is part ...
DNA Replication
... template for replication. Replication is carried out in a medium containing only unlabeled nucleotides. After two rounds of replication, what percent of double stranded DNA molecules are radioactive? A) 25% B) 50% C) 75% D) 100% 2. Which of these statements is false? A) The primosome is part of the ...
... template for replication. Replication is carried out in a medium containing only unlabeled nucleotides. After two rounds of replication, what percent of double stranded DNA molecules are radioactive? A) 25% B) 50% C) 75% D) 100% 2. Which of these statements is false? A) The primosome is part of the ...
DNA (Deoxyribonucleic Acid)
... two strands of the parental molecule separate, and each functions as a template for synthesis of a new complementary strand. ...
... two strands of the parental molecule separate, and each functions as a template for synthesis of a new complementary strand. ...
10AB worksheet
... __________ bond and two nucleotides that on the same strand bind with the ______________ bond. 5. The two strands of a DNA double helix are antiparallel. This means that _____. A) the two strands are mirror images B) only one of the two strands can be used as a template for replication, since DNA po ...
... __________ bond and two nucleotides that on the same strand bind with the ______________ bond. 5. The two strands of a DNA double helix are antiparallel. This means that _____. A) the two strands are mirror images B) only one of the two strands can be used as a template for replication, since DNA po ...
DNA History, Structure, and Replication – Part 2
... E. ______________________________ of the replication FORK (Remember, there are TWO forks going in OPPOSITE directions.) ...
... E. ______________________________ of the replication FORK (Remember, there are TWO forks going in OPPOSITE directions.) ...
What is the Structure of DNA?
... The new chromosome has a bit of single stranded DNA at each end (on the lagging strand) — this region is cut off. Eukaryote chromosomes have repetitive sequences at the ends called telomeres. ...
... The new chromosome has a bit of single stranded DNA at each end (on the lagging strand) — this region is cut off. Eukaryote chromosomes have repetitive sequences at the ends called telomeres. ...
Exam 3 Key
... a. the lagging strand has more short segments than the leading strand and those short segments are joined together by DNA ligase * b. DNA in the lagging strand is synthesized in the 3’----5’ direction c. the lagging strand has no RNA primase activity, it is replaced by the DNA ligase d. the lagging ...
... a. the lagging strand has more short segments than the leading strand and those short segments are joined together by DNA ligase * b. DNA in the lagging strand is synthesized in the 3’----5’ direction c. the lagging strand has no RNA primase activity, it is replaced by the DNA ligase d. the lagging ...
Supplemental Figure 3
... representative A. thaliana acccessions. Equivalent amounts of genomic DNA isolated from different accessions were subjected to PCR using the same pair of SCR1 primers (the PseSCR3 and PseSCR5 primers described by Shimizu et al. 2004). Note that DNA from the C24 and Mt-0 accessions, which lack SCR1 ...
... representative A. thaliana acccessions. Equivalent amounts of genomic DNA isolated from different accessions were subjected to PCR using the same pair of SCR1 primers (the PseSCR3 and PseSCR5 primers described by Shimizu et al. 2004). Note that DNA from the C24 and Mt-0 accessions, which lack SCR1 ...
Chapter 14 - Dr. Wilson`s Site
... – Griffith experiment documented movement of genes from one organism to another (transformation) movement of material can alter the genetic makeup of the recipient cell ...
... – Griffith experiment documented movement of genes from one organism to another (transformation) movement of material can alter the genetic makeup of the recipient cell ...
DNA PowerPoint
... the cell. Most prokaryotic DNA is a single circular molecule that contains nearly all the cell’s genetic information. ...
... the cell. Most prokaryotic DNA is a single circular molecule that contains nearly all the cell’s genetic information. ...
Chapter 16: The Molecular Basis of Inheritance
... 10. Which of the following statements about DNA polymerase is incorrect? a. It forms the bonds between complementary base pairs. (pg. 301) 11. Thymine dimers—covalent links between adjacent thymine bases in DNA—may be induced by UV light. When they occur, they are repaired by e. a, b, and c are all ...
... 10. Which of the following statements about DNA polymerase is incorrect? a. It forms the bonds between complementary base pairs. (pg. 301) 11. Thymine dimers—covalent links between adjacent thymine bases in DNA—may be induced by UV light. When they occur, they are repaired by e. a, b, and c are all ...
DNA Replication - Bi-YOLO-gy
... 4. Once all of the bases are matched up (A with T, C with G), an enzyme called exonuclease strips away the primer(s). The gaps where the primer(s) were are then filled by yet more complementary nucleotides. 5. The new strand is proofread to make sure there are no mistakes in the new DNA sequence. 6. ...
... 4. Once all of the bases are matched up (A with T, C with G), an enzyme called exonuclease strips away the primer(s). The gaps where the primer(s) were are then filled by yet more complementary nucleotides. 5. The new strand is proofread to make sure there are no mistakes in the new DNA sequence. 6. ...
Chapter-9-Chromosomes-and-DNA-Replication
... Meiosis (more in Chapter 10) • This is the process by which a cell called the gamete mother cell found in the testes in men and ovaries in women undergo division to form 4 new sex cells ( sperm or egg) each containing 23 chromosomes. ...
... Meiosis (more in Chapter 10) • This is the process by which a cell called the gamete mother cell found in the testes in men and ovaries in women undergo division to form 4 new sex cells ( sperm or egg) each containing 23 chromosomes. ...
SLG MOCK MIDTERM – FOR PRACTICE ONLY
... 20. Which of the following statements describes the concept of “semi-conservative” DNA replication? a. The two parental strands reassociate after acting as templates for new strands, thus restoring the parental double helix. b. Each strand of both daughter molecules contains a mixture of old and ne ...
... 20. Which of the following statements describes the concept of “semi-conservative” DNA replication? a. The two parental strands reassociate after acting as templates for new strands, thus restoring the parental double helix. b. Each strand of both daughter molecules contains a mixture of old and ne ...
Chapter 9 Topic: DNA history, replication Main concepts: •When
... are known as mutations. A mutation in a body cell may cause the cell to die, or can cause a malfunction, such as cancer (when the genes controlling cell division are mutated). A mutation in a sex cell (eggs or sperm) can be passed on to an offspring, so that all of the offspring’s body cells have th ...
... are known as mutations. A mutation in a body cell may cause the cell to die, or can cause a malfunction, such as cancer (when the genes controlling cell division are mutated). A mutation in a sex cell (eggs or sperm) can be passed on to an offspring, so that all of the offspring’s body cells have th ...
DNA Characteristics
... What are the three parts of a nucleotide? Which parts make up the backbone of a DNA strand? List the two base pairs found in DNA. If six bases on one strand of a DNA double helix are AGTCGG, what are the six bases on the complementary section of the other strand of DNA? ...
... What are the three parts of a nucleotide? Which parts make up the backbone of a DNA strand? List the two base pairs found in DNA. If six bases on one strand of a DNA double helix are AGTCGG, what are the six bases on the complementary section of the other strand of DNA? ...
Slide 1
... What is the role of these primers? Why are two different primers required? When DNA strands are separated in the PCR, what type of bond is broken? It is important in the PCR that the fragments of DNA used are not contaminated with any other biological material. Suggest a reason why. ...
... What is the role of these primers? Why are two different primers required? When DNA strands are separated in the PCR, what type of bond is broken? It is important in the PCR that the fragments of DNA used are not contaminated with any other biological material. Suggest a reason why. ...
Repair of Damaged DNA
... DNA from one chromosome to another or within a chromosome • Three types 1. Homologous - exchange between sections of DNA with closely related sequences 2. Site-specific 3. Transposition - occurs between unrelated sequences (e.g. Transposons; jumping genes ) Homologous Recombination Three purposes: 1 ...
... DNA from one chromosome to another or within a chromosome • Three types 1. Homologous - exchange between sections of DNA with closely related sequences 2. Site-specific 3. Transposition - occurs between unrelated sequences (e.g. Transposons; jumping genes ) Homologous Recombination Three purposes: 1 ...
Viral replication factories/site(s) inside live host: Replication forks
... Every living organism maintains its continuity by passing more or less accurate copies of its hereditary information to the next generation with the help of replication process. The replication process can be explained as “the process by which the genetic material of an organism copies itself in ord ...
... Every living organism maintains its continuity by passing more or less accurate copies of its hereditary information to the next generation with the help of replication process. The replication process can be explained as “the process by which the genetic material of an organism copies itself in ord ...
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.