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1. For each of the following mutagens, indicate what type of mutation will be induced. Also, describe how the mutagen induces the damage.(i) Acridine orange(ii) Ethyl Methane Sulfonate (EMS)(iii) 2-amino purine (2AP)(iv) aflatoxins(v) UV light2. Which of the following mutagenic agents do not cause transition mutations?a) Alkylating agentsb) Base analogsc) Aflatoxinsd) UV lighte) Acridine orange3. Which of the following enzymes is directly involved in base excision repair mechanism of mutations?GlycosylasesCyclic Adenosine MonophosphateSerines KinasesHelicasesAlkytransferases4. Shown below is a list of types of repair systems or repair molecules (a-g) and types of DNA damage or mutations (1-6). On the blank line following each type of damage, write the letter(s) of all repair systems that can repair (or play a role in the repair of) that particular type of damage.a) Photolyaseb) Base-excision repairc) SOS repaird) Alkyltransferasese) Mismatch repairf) Homologous recombinationg) Nucleotide-excision repair1) Alkylation of G residues __________2) Trinucleotide repeat expansion__________3) Depurination __________4) Pyrimidine dimers __________5) Deamination __________6) Double-stranded breaks __________5. Which of the following repair pathways do not involve the use of a homology-dependent repair system?Base excision repairPhoto reactivation repairTranscription coupled repairNucleotide excision repairMismatch repair
Birds and mammals have a four-chambered heart, with two ventricles and two atria, but other modern reptiles have a three-chambered heart, with just one ventricle. Paleontologists debate whether dinosaurs had a typical "reptile-like" heart or a "birdl..
Discuss the molecular mechanisms on how a photoreceptor relays a signal to the bipolar cells describe receptive fields in the retina and how they are relayed to the brain.
William Astbury discovered that the x-ray diffraction pattern of wool demonstrate a repeating structural unit spaced about 5.2 Å along the length of the wool fiber.
The performance of a seed can be determined by studying its germination and viability potential.give One of the most significant advances in seed testing.
With these anatomical features in mind, do some research in order to determine an angiosperm which has modified leaves, stems, roots or flowers that do not function in the normal manner, or that function in an unusual manner.
In addition to protein phosphorylation and dephosphorylation, protein degradation also plays key role in regulating signal transduction pathways and cell proliferation.express how protein degradation affects cell proliferation.
Assume you are mapping genes on the second chromosome of Drosophila melanogaster using three different true breeding mutant strains:
Though plants, fungi, and prokaryotes all have cell walls, we classify them under different taxonomic units. Which of the observations below comes closest to explaining the basis for placing these organisms in different taxa.
In enzyme lab. Manganese Dioxide does not come from a living thing. Is it a catalyst (define catalyst)? Is it an enzyme? Describe. Why did we test the hydrogen peroxide with manganese dioxide.
Suppose an uncorrected missense mutation occurs in a zygote at the one-cell stage. The cell divides twice to make a four-cell embryo.
State which genes are dominant genes that get expressed over the other genes and which genes are recessive the genes that will not be expressed when the dominant gene is present.
What is the cellular tropism of HIV and does it change during the course of an infection? Which cellular receptors confer the preference for infection of certain cell-types?
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