C. How do RecA and RecBCD function to promote recombination? D. Endonuclease activity of RecBCD is greater in the 3'-5' strand, rather than the 5'-3' strand. Describe how this affects strand invasion, branch migration and resolution. E. How is recombination initiated during meiosis in eukaryotes? F. What is the connection between nonhomologous end joining repair and canc
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Mendels second law is often referred to as the law of independent assortment . create an example to illustrate it and chi-square to verify the results
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Explain one way to grow a bacteria that would allow them to develop antibiotic resistance. Then explain one genetic modification you could make to your bacteria to help them develop antibiotic resistance.
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explain and demonstrate how a dihybrid test cross can be used to determine if autosomal linkage exists
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Need ideas for slides for a power point about egypt that include some of their of non-verbal cues in personal space, attitudes towards time, perception of touch, eye contact/appropriateness of gaze, facial expressions, and hand gestures (if relevant
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use the word resistant to explain how hybridization can be useful ?
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Describe what you think would happen to a cell that was missing the ligase enzyme and tried to replicate its DNA? Explain what this would mean for replication, and what it would mean for the organism.
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Essay 3: Signs of Frailty:
1) First, describe two proven signs or markers of clinical frailty; Then, 2) for each sign, discuss one possible intervention that could help to prevent frailty if detected earlier.
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protists are eukaryotic organism and many of them are unicellular. what two membrane bound organelles could a unicellular protist use to eat and what membrane transport mechanism would produce one of the membrane bound organelles used in this eating process? in addition to naming the two membrane bound organelles state the role each of them would be playing in the eating process.
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Choose one of the following traits (1) Dominant/recessive OR Codominant OR Incomplete dominance OR Sex-linked (2) choose a trait that fits into that category that was not mentioned in the PPT (3) briefly describe the trait and (4) what is the current percentage of people that have this trait in the US.
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Describe each of the following repair mechanisms. Your descriptions should (1) differentiate between the mechanisms, (2) indicate under what circumstances each mechanism is active, (3) make clear the basic steps of each mechanism and (4) identify the key enzymes involved. You might consider creating a diagram or table to assist you with your explanation.
a. proofreading
b. mismatch repair
c. excision repair (focus on nucleotide excision repair)
d. photoreactivation
e. recombinational repair
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1. a. Explain what mutations are, what causes them and whether mutations are beneficial or harmful to organisms and why.
b. Define and distinguish between frameshift, missense, nonsense, and silent mutations.
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Chapter 6 - Protozoa: Intestinal Flagellates and Ciliates
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Unscramble the word(s) on the left. Use the clue on the right. |
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2. Suppose that you isolated an enveloped helical RNA virus. Purified RNA from this virus is capable of supporting translation in a rabbit reticulocyte cell‑free translation system or in any other such system Further analysis indicates that this virus replication is inhibited if infected cells are incubated with protease inhibitor such as trypsin inhibitor. Based on this information, discuss the mechanism by which this virus replicates its genome in infected susceptible, permissive cells.
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The lac operon of E. coli encodes the two enzymes ß-Galactosidase and Permease. Indicate in the following table whether these enzymes are synthesized (“+”) or not (“–“) given the genotypes in the left column and the presence or absence of the inducer. Note that some of the genotypes are partial diploids, i.e. a second copy of the operon is present on a separate plasmid.
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Genotype |
Inducer Absent |
Inducer Present |
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|
β-Galactosidase |
Permease |
β-Galactosidase |
Permease |
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a) |
I+P+O+Z+Y+ |
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b) |
I+P+O+Z–Y+ |
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c) |
I+P+O+Z+Y– |
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d) |
I–P+O+Z+Y+ |
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e) |
Is P+O+Z+Y+ |
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f) |
I+P+Oc Z+Y+ |
||||
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g) |
Is P+Oc Z+Y+ |
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h) |
I+P+Oc Z+Y– |
||||
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i) |
I–P+O+Z+Y+ I+P+O+Z–Y– |
||||
|
j) |
I–P+O+Z+Y– I+P+O+Z–Y+ |
||||
|
k) |
Is P+O+Z+Y– I+P+O+Z–Y+ |
||||
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l) |
I+P+Oc Z–Y+ I+P+O+Z+Y– |
||||
|
m) |
I–P+Oc Z+Y– I+P+O+Z–Y+ |
||||
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n) |
Is P+O+Z+Y– I+P+Oc Z–Y+ |
||||
|
o) |
I+P–Oc Z+Y– I+P+O+Z–Y+ |
||||
|
p) |
I+P–O+Z+Y– I+P+Oc Z–Y+ |
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|
q) |
I–P–O+Z+Y+ I+P+O+Z–Y– |
||||
|
r) |
I–P+O+Z+Y– I+P–O+Z–Y+ |
||||
In: Biology